US Secretary of State John Kerry landed in Afghanistan on Monday for an unannounced visit

US Secretary of State John Kerry landed in Afghanistan on Monday for an unannounced visit.
  
Kerry is likely to face a testing meeting with President Hamid Karzai who has launched a series of verbal assaults on US troops and their coalition partners. "He will make clear that the US will have an enduring commitment in Afghanistan that will last beyond transition and that there will always be bumps on the road," a US official travelling with Kerry told reporters.
  
The United States and Afghanistan are also negotiating a strategic pact that will determine the US presence in the country after the end of international combat operations next year.
  
One major cause of friction between Washington and Kabul was solved hours ahead of Kerry's arrival when a ceremony was held to mark the final transfer of the controversial Bagram jail from US to Afghan control, according to AFP.

"Issues of security and sovereignty are always going to be difficult," the US official travelling with Kerry said. "But the most important thing is that we are honest to each other when there are differences between us, and you have seen some differences playing out recently."