President Donald Trump excluded Russia and North Korea from his “Liberation Day” tariffs announcement Wednesday, leaving many wondering why he would discipline allies like the European Union, but not others.

The absence of Russia on the president’s new list of countries that he’ll hit with steep tariffs did not go unnoticed on social media. Critics were quick to accuse Trump of kowtowing to Russian President Vladimir Putin, whom Trump has for years expressed his admiration of.

The Trump administration says sanctions imposed on Moscow mean the U.S. does little trade with Russia, but questions persist about the motivations.