The top US military commander and special envoy to Afghanistan and Pakistan arrived in Kabul Sunday for high-level talks, a US official said, after NATO backed a new US strategy for the region. The chairman of the Joint Chiefs of Staff, Admiral Mike Mullen, and ambassador Richard Holbrooke would be in Afghanistan for a "few days", a US military spokesman told a foreign news agency. "They will be meeting high-level officials in the Afghan government as well the international military," Colonel Greg Julian said. The visit is their first since President Barack Obama last month unveiled a new strategy for Afghanistan, drawn up after a two-month assessment of flagging efforts to subdue an extremist insurgency and stabilise the turbulent country.