Fears Moscow testing west in grey zone between war and peace with incursions into Nato territory

Nato defence ministers will look on Wednesday at boosting the alliance’s ability to counter Russian air incursions, as fears grow that Moscow is testing the west in a grey zone between war and peace.

Focus will be on bolstering support for Ukraine as US Defense Secretary Pete Hegseth joins his 31 Nato counterparts with his boss, President Donald Trump, mulling the supply of long-range missiles to Kyiv – after Ukraine president Volodymyr Zelenskyy confirmed that he would be meeting with Trump in Washington on Friday to discuss supplying Ukraine with Tomahawk missiles.

Hegseth said on Wednesday the US expects countries to invest more into the Prioritized Ukraine Requirements List (PURL) arms initiative for Ukraine.

The gathering in Brussels comes after Moscow rattled Nato with a series of high-profile airspace violations in Poland and Estonia that fuelled fears of conflict spilling over its border.