US Secretary of State John Kerry is to visit the UK later this week for talks on the Syria crisis.
Mr Kerry's three-day visit will begin on Friday, and he will meet Foreign Secretary Philip Hammond in London.
The US State Department says they will discuss "the ongoing crisis in Syria and refugee situation".
David Cameron has announced that the UK will accept up to 20,000 refugees from camps surrounding Syria, but Labour says that is "not enough".
The new arrivals to the UK will be offered five-year humanitarian visas, under the Vulnerable Persons Relocation Scheme, and their resettlement will be paid for in the first year from the overseas aid budget..
While in the UK, Mr Kerry will also hold talks with United Arab Emirates Foreign Minister Abdullah bin Zayed.