The border closure has disrupted a vital rail corridor which normally accounts for approximately €25 billion per year in freight traffic between China and the EU. The closure compounds existing frictions over tariffs, subsidies, and security concerns that have long pressured EU-China trade ties. Warsaw described the maneuvers as "very aggressive" and conducted "very close to the Polish border." According to Sikorski, a noted Russia hawk, "the logic of trade" was being replaced by "the logic of security," Politico reported, citing Polish foreign affairs spokesman Pawel Wronski. He pointed to Washington's pressure on the EU to slap extra tariffs on China over its purchases of Russian energy.