UK and Germany condemn arrest of Britain's Tehran ambassador - UK PM's office

British Prime Minister Boris Johnson and German Chancellor Angela Merkel condemned the arrest of Britain's ambassador to Tehran, a spokesman from Johnson's office said in a statement issued after the two leaders spoke on Sunday.

"On Iran, they discussed the tragic loss of life on the Ukraine International Airlines passenger jet. They condemned Iran's arrest of the UK Ambassador to Tehran as a violation of international law," the spokesman said.

"The leaders also discussed our shared interests in ensuring Iran never acquires a nuclear weapon and reaffirmed their continued commitment to preserving the JCPOA (Iran nuclear deal)."