More NATO countries will move their troops and fighter jets eastwards in response to Wednesday's unprecedented Russian drone incursion into Polish airspace.
Denmark, France, and Germany have joined a new mission to bolster the military alliance's eastern flank. Other NATO allies are expected to take part later.
It came as the Kremlin said on Friday that peace talks with Kyiv were on pause, with spokesman Dmitry Peskov saying: You can't wear rose-tinted glasses and expect that the negotiation process will yield immediate results.
Political tensions have been high across Europe after Poland said 19 Russian drones had flown through its airspace on Wednesday. Some were shot down, while others crashed into fields and even a house in eastern Poland.
Russia's military said it had no plans to target facilities in Poland - but Polish and European leaders believe the incursion was deliberate.
According to the Danish defence ministry, Denmark will contribute two F-16 fighter jets to support Poland's air defence, and a warship. Prime Minister Mette Frederiksen stated, We must not be naive. Putin will stop at nothing, and he is testing us. Therefore, it is crucial... Denmark is contributing to this. France will contribute three Rafale fighter jets, and Germany will give four Eurofighters.
The UK is fully committed to helping strengthen the Eastern Sentry, the Ministry of Defence announced, adding that it will provide more details soon.
On Friday, European countries and the US stood by Poland during an urgent UN Security Council session discussing Russia's drone incursion. The acting US Ambassador to the UN, Dorothy Shea, affirmed support, stating, The United States stands by our NATO allies in the face of these alarming airspace violations.
Amid this escalation, Poland's Secretary of State Marcin Bosacki held up photos of one of the downed drones and the damage it had caused.
Germany has also pledged to intensify its engagement along NATO's eastern border and extend air policing over Poland.
