Earlier this week, Putin congratulated Trump on his election victory and said Trump's claim that he can help end the war in Ukraine "deserves attention at least".
Mr Lanza also criticised the support the Biden-Harris administration and European countries have given to Ukraine since Russia's full-scale invasion in February 2022.
"The reality on the ground is that the European nation states and President Biden did not give Ukraine the ability and the arms to win this war at the very beginning and they failed to lift the restrictions for Ukraine to win," he said.
Earlier this year, the US House of Representatives approved a $61bn (£49bn) package in military aid for Ukraine to help combat Russia's invasion.
The US has been the biggest arms supplier to Ukraine - between February 2022 and the end of June 2024, it delivered or committed weapons and equipment worth $55.5bn (£41.5bn), according to the Kiel Institute for the World Economy, a German research organisation.