Biden opens a door on Iran, but presses allies on Afghanistan.
Prime Minister Erdogan's popular tirade on Gaza also hurt his credibility.
As Obama spells out aims to engage with Iran, the Islamic Republic debates whether to step away from decades of hatred for the 'Great Satan.'
Despite President Obama's offer to extend a hand if Iran 'unclenched its fist,' Iranian officials say his choice of diplomats calls into question his commitment to change.
Western nations worry that a Safir rocket could deliver nuclear weapons.