An analyst based in Washington DC says the killing of Al-Qaeda chief Ayman al-Zawahiri is "a huge success for the US and for the global coalition" and "a significant blow to Al-Qaeda", but "does not define" the whole US strategy after its retreat from Afghanistan. "What it does not speak to is how well we can contain terrorist organizations" in Afghanistan, adds Andrew Mines, research fellow at George Washington University. IMAGES AND SOUNDBITES