But the efforts to reach an agreement have clearly been a source of tension with the Bush team.

Immigration is likely to be a source of tension in their talks.

The decision to put off these issues is becoming a source of tension and confusion in the Bush administration.

Race is no longer seen as the greatest source of tension in American society.

It remained a source of tension between the two nations until late in the 17th century.

It is a key source of tension between the republics and the central government over who should control its development.

This remains a source of much tension between the two countries.

There are also serious sources of increased tension in Russia.

Here's why: There are several clear sources of tension within the economy today.

One ongoing source of tension is over how political the group should be.