Gambia's President Adama Barrow has returned to the country to assume power - days after his predecessor Yahya Jammeh left to go into exile.

Senegalese troops have entered The Gambia to ensure Adama Barrow assumes power as the country's new president, a Senegalese army spokesman has said.

Yahya Jammeh, The Gambia's authoritarian president of 22 years, has suffered a surprise defeat in the country's general election.