The US military says thousands of Nato-led troops have launched the biggest ever offensive in Afghanistan since the overthrow of the Taliban in 2001. US marines and Afghan troops are attacking the Taliban-held town of Marjah in Nad Ali district in a bid to re-establish Government control. Nato says Marjah is under control of insurgents number between 400 to 1,000. Many residents fled ahead of Operation Moshtarak – meaning "together" in Dari. Nato has reportedly distributed leaflets in the Marjah area warning of the planned offensive. Operation Moshtarak is led by the US Marine Corps, but British troops are also involved, supported by Danes and Estonians. <br/>