An exchange of ambassadors is part of Obama's policy of engagement over confrontation.
The Islamic republic is unlikely to change its foreign policy or nuclear program, no matter who comes out on top. But the crisis could change Arab relations with the US and Iraq.
Tracking North Korea's Kang Nam is not an extraordinary duty for American warships.
Thailand and Singapore have longstanding military ties with America but also trade with Burma, where the vessel is headed.
Saturday's massive bomb in Kirkuk, combined with political gridlock, raises questions about how ready Iraq is for the withdrawal of US troops from cities by June 30.
The aging craft, heading toward the Strait of Malacca, is an unlikely player in what is fast becoming an international drama.
The 1960 report defends Israel's nuclear ambitions, offers guidance on handling today's nuclear-hopefuls.