European leaders warn of 'downward spiral' after Trump threatens tariffs over Greenland (theguardian.com)

• Trump threatens tariffs on Greenland, escalating US-EU tensions
• Denmark and EU denounce the move, consider retaliation
• NATO allies divided over response to the crisis

"European leaders have warned of a dangerous escalation in transatlantic relations after U.S. President Donald Trump threatened to impose tariffs on Greenland. The threat challenges Danish sovereignty and is seen as a move to assert U.S. interests in the Arctic. The EU is considering retaliatory tariffs, while NATO faces internal divisions. The dispute could reshape security dynamics in the North Atlantic."