The treaty is part of Starmer's efforts to deepen cooperation with the European Union, which the UK voted to leave in 2016 following a divisive referendum campaign. #EuropeNews

Le traité, qui devrait être signé mercredi, comprend des mesures pour renforcer la coopération militaire entre Londres et Varsovie.

The treaty aims to safeguard British borders, combat organised crime and strengthen collective defences