NATO Secretary-General Mark Rutte is working to keep the alliance united and Donald Trump engaged. But disputes over burden sharing, US military commitments, and the Iran war are creating a major test for NATO unity.

Officials say that, to appease the US, ‘burden-shifting’ rather than simply ‘burden-sharing’ will be one of the main themes in Ankara as the EU and others face pressure to ramp up their own production of defence and security equipment.

BRUSSELS, July 3 - NATO leaders including U.S. President Donald Trump are set to affirm an \"ironclad commitment\" to collective defence under the alliance's Article 5 pact at a summit in Ankara next week, according to a text approved by NATO ambassadors on Friday and reviewed by Reuters. Read more at straitstimes.com. Read more at straitstimes.com.