The co-leader of Germany’s hard-left Die Linke (The Left) has spoken out against closer ties between NATO and Ukraine and the supply of more arms to Kiev’s armed forces. During a recent trip to Ukraine, Jan van Aken told dpa he thought it would be “a mistake to say that the only way we can be sure of security is to be in NATO.” He also said that “we should first try all the other options between simply supplying weapons and doing nothing.” As one option, he mentioned imposing tougher sanctions against the Kremlin, highlighting the oil tankers used by Russia for oil exports. He said he found it…