Defence Secretary Philip Hammond is to embark on a tour of Gulf states in a show of British support in the face of Isis's advances in Iraq.
Mr Hammond will meet ministers from of Saudi Arabia, the United Arab Emirates, Kuwait and Qatar during his two-day visit to the region starting tomorrow.
"The UK is deeply concerned by the recent developments in Iraq and the gains made by Isis.
"Although the UK is not planning a military intervention, we are committed to finding a long-term political solution," Mr Hammond said.
"We remain committed to the security of the Gulf, and want to reassure our friends and allies that we will do everything possible to support those who are working for a stable and democratic Iraqi state and to alleviate humanitarian suffering."