Hundreds if not thousands of illegal immigrants sought to illegally cross the border from Belarus into Poland on Monday, with some cutting razor wire fences and using tree branches and small trees to try and climb over. The development is an escalation of a crisis along the European Union’s eastern border that has been simmering for months. Belarus has been accused of weaponizing illegal immigration against the EU for its own political gain. Poland’s interior ministry said it had rebuffed what it called an illegal invasion and claimed the situation was under control. The country’s Defense Ministry posted a video showing an armed Polish officer using a chemical spray through a fence at men who were trying to cut razor wire. Some migrants threw objects at the police. Video footage from Belarusian media showed people using long wooden poles or branches to try to get past a border fence as …