Most Americans fear major war over the next four years

Nearly 80 percent of Americans fear the U.S. will get involved in a major war, according to a poll released Tuesday via NBC News and Survey Monkey.

In it, 76 percent of Americans say they're worried about America becoming engaged in a major war in the next four years.

That's up from the 66 percent in the same poll in February. But who does America fear most?

Click through images North Korea's missiles:

North Korea is the most immediate threat with 41 percent, followed by ISIS with 28 percent and Russia with 18 percent.

This comes as tensions surrounding all three have increased significantly.

With North Korea testing an intercontinental ballistic missile, the U.S. and South Korea responded with tests of their own.

There's also the continued fight against the Islamic State throughout the Middle East, as well as the threat of homegrown attacks on American soil.

The relationship between the U.S. and Russia has been strained with allegations by American intelligence agencies that the Russian government interfered in the 2016 Presidential election.