DOHA, Qatar — Qatar’s emir and President Donald Trump discussed efforts to ease Middle East tensions in a telephone call Friday, according to the Qatari ruler’s office.

Sheikh Tamim bin Hamad Al Thani emphasized continued dialogue, secure energy supplies and freedom of maritime navigation. Qatar has been mediating between Washington and Tehran as regional governments seek to prevent renewed fighting.

The call concerned efforts toward a comprehensive agreement; the announcement did not report a completed settlement.

A senior Iranian official told Reuters Thursday that Tehran had sent a nuclear proposal through Qatar. Conditions for talks remain disputed, including sanctions relief and the place of nuclear issues in initial negotiations.