NATO Secretary General Mark Rutte greets US President Donald Trump (C), next to Turkey's President Recep Tayyip Erdogan (R), as he arrives for the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alastair Grant / POOL / AFP via Getty Images)

US President Donald Trump and NATO Secretary General Mark Rutte (R) attend the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alastair Grant / POOL / AFP via Getty Images)

(From L) Britain's Prime Minister Keir Starmer, US President Donald Trump and NATO Secretary General Mark Rutte and NATO Leaders participate in a working session during the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, on July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alexis JUMEAU / POOL / AFP via Getty Images)

US President Donald Trump gestures as he meets with NATO Secretary General on the sidelines of the NATO summit in Ankara, on July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Filip SINGER / POOL / AFP via Getty Images)

US President Donald Trump (C) and NATO Leaders arrive to participate in a working session during the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, on July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alexis JUMEAU / POOL / AFP via Getty Images)

NATO Leaders participate in a working session during the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, on July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alexis JUMEAU / POOL / AFP via Getty Images)

NATO Secretary General Mark Rutte greets US President Donald Trump (C), next to Turkey's President Recep Tayyip Erdogan (R), as he arrives for the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alastair Grant / POOL / AFP via Getty Images)

Turkey's President Recep Tayyip Erdogan greets US President Donald Trump as he arrives for the NATO Summit at Bestepe Presidential Compound in Ankara, Turkey, July 8, 2026. The summit comes at a fraught time for the 77-year-old transatlantic alliance, with the US President demanding members make good on a pledge to ramp up defence spending as Washington takes a step back from Europe. (Photo by Alastair Grant / POOL / AFP via Getty Images)