Index: maven-core/src/main/java/org/apache/maven/DefaultProjectDependenciesResolver.java
===================================================================
--- maven-core/src/main/java/org/apache/maven/DefaultProjectDependenciesResolver.java	(revision 1213039)
+++ maven-core/src/main/java/org/apache/maven/DefaultProjectDependenciesResolver.java	(working copy)
@@ -103,37 +103,6 @@
             return resolved;
         }
 
-        /*
-
-        Logic for transitive global exclusions
-
-        List<String> exclusions = new ArrayList<String>();
-
-        for ( Dependency d : project.getDependencies() )
-        {
-            if ( d.getExclusions() != null )
-            {
-                for ( Exclusion e : d.getExclusions() )
-                {
-                    exclusions.add(  e.getGroupId() + ":" + e.getArtifactId() );
-                }
-            }
-        }
-
-        ArtifactFilter scopeFilter = new ScopeArtifactFilter( scope );
-
-        ArtifactFilter filter;
-
-        if ( ! exclusions.isEmpty() )
-        {
-            filter = new AndArtifactFilter( Arrays.asList( new ArtifactFilter[]{ new ExcludesArtifactFilter( exclusions ), scopeFilter } ) );
-        }
-        else
-        {
-            filter = scopeFilter;
-        }
-        */
-
         CumulativeScopeArtifactFilter resolutionScopeFilter = new CumulativeScopeArtifactFilter( scopesToResolve );
 
         CumulativeScopeArtifactFilter collectionScopeFilter = new CumulativeScopeArtifactFilter( scopesToCollect );
Index: maven-core/src/main/java/org/apache/maven/lifecycle/internal/LifecycleDependencyResolver.java
===================================================================
--- maven-core/src/main/java/org/apache/maven/lifecycle/internal/LifecycleDependencyResolver.java	(revision 1213039)
+++ maven-core/src/main/java/org/apache/maven/lifecycle/internal/LifecycleDependencyResolver.java	(working copy)
@@ -31,11 +31,17 @@
 import org.codehaus.plexus.component.annotations.Component;
 import org.codehaus.plexus.component.annotations.Requirement;
 import org.codehaus.plexus.logging.Logger;
+import org.sonatype.aether.RepositorySystemSession;
+import org.sonatype.aether.collection.DependencySelector;
 import org.sonatype.aether.graph.Dependency;
 import org.sonatype.aether.graph.DependencyFilter;
 import org.sonatype.aether.graph.DependencyNode;
+import org.sonatype.aether.util.DefaultRepositorySystemSession;
 import org.sonatype.aether.util.filter.AndDependencyFilter;
 import org.sonatype.aether.util.filter.ScopeDependencyFilter;
+import org.sonatype.aether.util.graph.selector.AndDependencySelector;
+import org.sonatype.aether.util.graph.selector.ExclusionDependencySelector;
+import com.sun.corba.se.spi.legacy.connection.GetEndPointInfoAgainException;
 
 import java.util.*;
 
@@ -114,6 +120,8 @@
                 }
             }
 
+            setExclusionsDependencySelector(session, project.getExclusions());
+
             Set<Artifact> artifacts =
                 getDependencies( project, scopesToCollect, scopesToResolve, session, aggregating, projectArtifacts );
 
@@ -145,6 +153,27 @@
         }
     }
 
+    private void setExclusionsDependencySelector( MavenSession session, List<org.apache.maven.model.Exclusion> exclusions )
+    {
+        final Set<org.sonatype.aether.graph.Exclusion> globalExclusions = new HashSet<org.sonatype.aether.graph.Exclusion>();
+        for ( org.apache.maven.model.Exclusion e : exclusions )
+        {
+            globalExclusions.add(new org.sonatype.aether.graph.Exclusion(e.getGroupId(), e.getArtifactId(), "*", "*"));
+        }
+        final DefaultRepositorySystemSession repositorySession = (DefaultRepositorySystemSession) session
+                .getRepositorySession();
+        final DependencySelector selector = session.getRepositorySession().getDependencySelector();
+        if ( selector != null )
+        {
+            repositorySession.setDependencySelector(AndDependencySelector.newInstance(selector,
+                    new ExclusionDependencySelector(globalExclusions)));
+        }
+        else
+        {
+            repositorySession.setDependencySelector(new ExclusionDependencySelector(globalExclusions));
+        }
+    }
+
     private Set<Artifact> getDependencies( MavenProject project, Collection<String> scopesToCollect,
                                            Collection<String> scopesToResolve, MavenSession session,
                                            boolean aggregating, Set<Artifact> projectArtifacts )
Index: maven-core/src/main/java/org/apache/maven/project/MavenProject.java
===================================================================
--- maven-core/src/main/java/org/apache/maven/project/MavenProject.java	(revision 1213039)
+++ maven-core/src/main/java/org/apache/maven/project/MavenProject.java	(working copy)
@@ -46,6 +46,7 @@
 import org.apache.maven.model.DependencyManagement;
 import org.apache.maven.model.Developer;
 import org.apache.maven.model.DistributionManagement;
+import org.apache.maven.model.Exclusion;
 import org.apache.maven.model.Extension;
 import org.apache.maven.model.IssueManagement;
 import org.apache.maven.model.License;
@@ -425,6 +426,16 @@
         return getModel().getDependencies();
     }
 
+    public void setExclusions( List<Exclusion> exclusions )
+    {
+        getModel().setExclusions(exclusions);
+    }
+
+    public List<Exclusion> getExclusions()
+    {
+        return getModel().getExclusions();
+    }
+
     public DependencyManagement getDependencyManagement()
     {
         return getModel().getDependencyManagement();
Index: maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java
===================================================================
--- maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java	(revision 1213039)
+++ maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java	(working copy)
@@ -244,6 +244,7 @@
         }
 
         validateStringNotEmpty( "version", problems, Severity.ERROR, model.getVersion(), model );
+        validateEffectiveExclusions(problems, model.getExclusions(), false, request);
 
         Severity errOn30 = getSeverity( request, ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_3_0 );
 
@@ -446,6 +447,36 @@
         }
     }
 
+    private void validateEffectiveExclusions( ModelProblemCollector problems, List<Exclusion> exclusions,
+            boolean management, ModelBuildingRequest request )
+    {
+        String prefix = "exclusions.exclusion.";
+
+        for ( Exclusion e : exclusions )
+        {
+            validateEffectiveExclusion(problems, e, prefix, getManagementKey(e));
+        }
+    }
+
+    private void validateEffectiveExclusion( ModelProblemCollector problems, Exclusion exclusion, String prefix,
+            String managementKey )
+    {
+        validateId(prefix + "groupId", problems, Severity.WARNING, exclusion.getGroupId(), managementKey, exclusion);
+
+        validateId(prefix + "artifactId", problems, Severity.WARNING, exclusion.getArtifactId(), managementKey, exclusion);
+    }
+
+    /**
+     * @param e
+     *            the Exclusion object
+     * @return the management key as <code>groupId:artifactId</code>
+     * @see Dependency#getManagementKey()
+     */
+    private String getManagementKey( Exclusion e )
+    {
+        return e.getGroupId() + ":" + e.getArtifactId();
+    }
+
     private void validateEffectivePluginDependencies( ModelProblemCollector problems, Plugin plugin,
                                                       ModelBuildingRequest request )
     {
@@ -525,11 +556,7 @@
         {
             for ( Exclusion exclusion : d.getExclusions() )
             {
-                validateId( prefix + "exclusions.exclusion.groupId", problems, Severity.WARNING,
-                            exclusion.getGroupId(), d.getManagementKey(), exclusion );
-
-                validateId( prefix + "exclusions.exclusion.artifactId", problems, Severity.WARNING,
-                            exclusion.getArtifactId(), d.getManagementKey(), exclusion );
+                validateEffectiveExclusion(problems, exclusion, prefix + "exclusions.exclusion.", d.getManagementKey());
             }
         }
     }
Index: maven-model/src/main/mdo/maven.mdo
===================================================================
--- maven-model/src/main/mdo/maven.mdo	(revision 1213039)
+++ maven-model/src/main/mdo/maven.mdo	(working copy)
@@ -707,6 +707,16 @@
             <multiplicity>*</multiplicity>
           </association>
         </field>
+        <field>
+          <name>exclusions</name>
+          <version>4.0.0</version>
+          <description>Lists a set of artifacts that should be excluded from this project's
+            artifact list when it comes to calculating transitive dependencies.</description>
+          <association>
+            <type>Exclusion</type>
+            <multiplicity>*</multiplicity>
+          </association>
+        </field>
         <field xdoc.separator="blank">
           <name>repositories</name>
           <version>4.0.0</version>