Wall Street Preview: What You Need to Know Before the Opening Bell

U.S. stock futures were narrowly mixed on Wednesday, July 5, as tensions in Asia unsettled investors.

North Korea on Wednesday said that its intercontinental ballistic missile was able to carry a large nuclear warhead. The regime fired a missile into Japan's Exclusive Economic Zone early Tuesday. The U.S. Defense Department believes the missile could reach as far as Alaska and possibly other parts of the U.S. mainland.

In response, U.S. Secretary of State Rex Tillerson called the missile firing a "new escalation of threat" and the U.S. has called for an emergency meeting of the U.N. Council. The missile firing comes days before of a meeting of G20 leaders where a discussion of the proliferation of weapons in Pyongyang will be on the agenda.

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