Secretary of State Rex Tillerson will be meeting with British officials in London next week for United Kingdom-hosted events on North Korea and Libya, including strategies to counter Pyongyang's nuclear and missile programs.

Tillerson will meet with U.K. Foreign Secretary Boris Johnson and National Security Adviser Mark Sedwill. Additionally, he will participate in a ministerial on Libya with U.N. Special Representative of the Secretary General for Libya Ghassan Salame, the State Department announced in a statement Friday.

Tillerson will be in London from Sept. 13-14.

North Korea could conduct another test of its most updated intercontinental ballistic missile over the weekend, South Korean officials warned Friday. Earlier this week on Sunday, North Korea conducted its sixth and most powerful nuclear test to date. North Korea said the test was a hydrogen bomb with a yield of more than 100 kilotons. North Korea released two tests of its new Hwasong-14 ICBM missile in July.

Treasury Secretary Steven Mnuchin said Thursday he has prepared an executive order with which the U.S. would pass sanctions on countries that conduct trade with North Korea, if the United Nations is unable to pass new sanctions.

"If we don't get these additional sanctions at the U.N., as I mentioned over the weekend, I have an executive order prepared, that's ready to go to the president that will authorize to stop doing trade and put sanctions on anybody that does trade with North Korea," Mnuchin said Wednesday to reporters.

Additionally, the U.N. is planning to send 150-250 primarily Nepalese guards to Libya to guard its base in Tripoli. This plan, headed up by Western governments, is part of a strategy to hand over control of the country back to Libya and reduce tensions of rival factions in order for the country to stabilize itself, Reuters reported Friday.