One of Sir Keir Starmer's final meetings at the NATO summit was with the Turkish president, Recep Tayyip Erdogan.
We've had a readout of the conversation from Downing Street in the last few minutes.
A spokeswoman said: "The leaders began by discussing the perilous situation in the Middle East.
"The leaders welcomed the ceasefire between Israel and Iran and agreed that negotiations must lead to the next vital step forward."
On the war in Gaza, the pair "agreed that there needed to be an urgent acceleration of aid and an end to the intolerable situation".
And on Ukraine, the prime minister thanked Erdogan "for his support to the coalition of the willing planning and thanked him for Turkey's role in peace talks".
"The leaders also welcomed the strengthening military cooperation between the two countries, and agreed on the importance of making progress in free trade agreement talks," the spokeswoman concluded.