US President Donald Trump meets Syrian President Ahmed al-Sharaa (L) on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 SAUL LOEB / AFP via Getty Images)

Syrian President Ahmed al-Sharaa meets US President (not pictured) on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 SAUL LOEB / AFP via Getty Images)

US President Donald Trump meets Syrian President Ahmed al-Sharaa (L) on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 SAUL LOEB / AFP via Getty Images)

US President Donald Trump meets Syrian President Ahmed al-Sharaa (L) on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 SAUL LOEB / AFP via Getty Images)

US President Donald Trump meets Syrian President Ahmed al-Sharaa (L) on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 SAUL LOEB / AFP via Getty Images)

Britain's Prime Minister Keir Starmer (L) and Turkey's President Recep Tayyip Erdogan sign a defense partnership agreement on the sidelines of the NATO Summit at Bestepe Presidential Compound 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 Alastair Grant / POOL / AFP via Getty Images)

France's President Emmanuel Macron speaks to the press during a NATO Summit at Bestepe Presidential Compound 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 Ludovic MARIN / AFP via Getty Images)

This handout picture taken and released by Turkish Presidential Press Service on July 8, 2026 shows Turkey's President Recep Tayyip Erdogan shaking hands with Germany's Chancellor Friedrich Merz as they meet on the sidelines of a NATO Summit at Bestepe Presidential Compound in Ankara. 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 Handout / TURKISH PRESIDENTIAL PRESS SERVICE / AFP via Getty Images) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / Turkish Presidential Press Service" - HANDOUT - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS