Last week, after months of requests, Germany agreed to send German-built tanks called Leopard 2s to Ukraine, to help in their fight against Russia. That decision opened the door for other countries to send their Leopard 2s, including Canada – which will send four. The US also jumped in, agreeing to send 31 of its M1 Abrams tanks. All in, over 300 tanks are being sent to the country. Now, Ukraine is asking for more weapons – including long range guided missiles – faster. But this begs the question: how will an influx of heavy weaponry change the situation on the ground? Could this mean an end to the war? Or could it mark the start of a new, increasingly violent and dangerous impasse? Rajan Menon is the Director of The Grand Strategy program at The Defence Priorities think tank. He’s also a senior research scholar at Columbia. He gives his take on how this next phase of the war could play out.