US National Security Advisor General H.R. Mcmaster has arrived in Kabul days after the American military dropped its largest non-nuclear bomb on Islamic state group hideouts in eastern Afghanistan.

On his first visit to the country as President Donald Trump’s envoy, Mcmaster said on twitter he was set to hold “Very important talks on mutual Cooperation” with President Ashraf Ghani and other top officials.

A statement from Ghani’s office later said Mcmaster discussed security issues and counter-terrorism efforts as well as reforms aimed at tackling corruption.

The US has around 8,400 troops in the country with about another 5,000 from NATO allies, as efforts to negotiate a lasting peace settlement between Kabul and the Taliban have repeatedly fallen through.