Zimbabwe's peace process is near collapse, amid accusations of guerrilla training camps and abductions of opposition party members.
Thousands of protesters are calling for the release of journalist Mundtadhar al-Zeidi.
US forces may stay in the volatile northern city beyond the June deadline for Americans to pull back to bases.
While President Bush traveled to Baghdad Sunday to hail progress, the war is far from over in places like Mosul where US and Iraqi forces still battle insurgents linked to Al Qaeda in Iraq.
While conditions are improving at the Central Teaching Hospital for Children in Baghdad and elsewhere in Iraq, the country still faces vast humanitarian needs.
Despite President Bush's strong words Tuesday, few levers exist to force Zimbabwe's leader out.