Iraq's top envoy in the United States says it's hard to say when coalition troops will be able to go home. In an interview with The Associated Press, Rend Rahimi shied away from offering even a tentative timeline for US troop withdrawal. She says Iraq's measure for when it will no longer need the help of multinational troops is when its own military and police forces have the capacity to keep order without outside assistance. Rahimi also believes the US military isn't really the prime target of the insurgent attacks -- the new government is. She says insurgent groups are outraged that the political revolution Iraq has experienced has left them out in the cold. Rahimi also believes the interim government has a lot more support than polls would suggest.