Geopolitical Tensions Rise: US Retaliates Against Iran, Trump Eyes Greenland

Hello, this is Justina Lee writing to you from Singapore. Welcome to another edition of CNBC's Daily Open.

Geopolitical tensions are back in the spotlight, with the U.S. retaliating against Iran for new attacks, and President Donald Trump's renewed comments about taking over Greenland.

The 2026 World Cup is only to the quarterfinal round, but companies are reportedly already eyeing acquisition of the U.S. broadcast rights to the 2030 and 2034 events.

What you need to know today

Tensions in the Middle East have begun to escalate again after a series of attacks on tankers in the Strait of Hormuz prompted the Trump administration to revoke Iran's oil sales authorization.

A liquefied natural gas tanker, an oil supertanker and an unspecified third tanker came under attack in or near the waterway on Tuesday, according to the Joint Maritime Information Center.

"Iran's actions in the Strait were wholly unacceptable to the United States and will be met with consequences," a U.S. official told CNBC under anonymity.

Fears that the Strait of Hormuz would close again have also been sparked by a "series of powerful strikes" by the U.S. against Iran on Tuesday in retaliation for those attacks.

Over in Europe, Ukrainian drones struck a major oil refinery located in western Siberia, as the country steps up its attacks on Russian oil facilities in recent months. This appears to be one of Kyiv's deepest attacks on Russian territory since the full-scale invasion of Ukraine.

Meanwhile, even Greenland wasn't spared from geopolitical tensions as Trump renewed his push for the U.S. to dominate the region during the NATO summit.

Trump said that the island territory "should be controlled by the United States," adding that the U.S. could pull all of its armed services members out of Europe, should NATO continue to push back.

Meanwhile, the World Cup quarterfinal matches are set, with six of the final eight teams coming from Europe. Argentina came from behind to defeat Egypt 3-2 and Switzerland beat Colombia 4-3 on penalties after a goalless match.