President Obama's Air Force One touched down at Nairobi's international airport shortly before 20:10 local time ( 17:10 GMT). He was greeted by President Kenyatta with a handshake and embrace. Ahead of Mr Obama's arrival, the Kenyan capital was in lockdown with many streets closed and people opting to stay at home. The US president will hold talks on trade and investment, and also security and counter-terrorism. Mr Obama will also become the first US leader to address the African Union when he travels on to Ethiopia on Sunday.
"I'll be the first US president to not only visit Kenya and Ethiopia, but also to address the continent as a whole, building off the African summit that we did here which was historic and has, I think, deepened the kinds of already strong relationships that we have across the continent." President Barack Obama.