Mr Macron is expected to meet with Mr Trump on Monday to discuss the situation in Ukraine.
The G20 meeting of foreign ministers of major economies will begin on Thursday in Johannesburg, South Africa.
Mr Zelensky recently said that he was willing to talk to Mr Putin.
Mr Starmer said, “I think that we need to do more. We need to step up in terms of our collective response in Europe. And by that, I mean capability.”
The German firm has already completed delivery of 4,000 combat drones.
On Wednesday, Mr Trump announced that he would meet Putin to seek a solution to end Russia’s war against Ukraine.
Mr Trump spoke with Mr Putin on the phone on Wednesday and agreed to begin negotiations to end the war against Ukraine.
The American leader said both he and the Russian president reminisced about centuries-old history.
It was initially unclear whether these were rocket impacts or damage caused by debris from intercepted missiles.
Mr Trump’s return to the White House also raised concerns about the U.S. role in helping to ensure European security and the future of thousands of U.S. troops.
