Nato pledged billions more for Ukraine and vowed to contain Russia and Iran. Although Donald Trump’s musings about quitting Europe militarily and strong‑arming allies over Greenland underlined how dependent the continent’s security still is on a single, volatile, leader.

Defence spending, Ukraine and the Iran conflict will dominate the Ankara meeting

This Tuesday, NATO leaders land in Ankara for an annual summit. The pre-negotiated statement promises an iron-clad 32-member family committed to collective protection. However,…