Which country borders Yemen to the north?

Yemen is a country at the southern end of the Arabian Peninsula in Western Asia. It is the second-largest Arab sovereign state in the peninsula, occupying 527,970 square kilometres (203,850 square miles).

The coastline stretches about 2,000 kilometres (1,200 miles). It is bordered by Saudi Arabia to the north, the Red Sea to the west, the Gulf of Aden and Guardafui Channel to the south, and the Arabian Sea and Oman to the east.

Until the signing of the Yemen-Saudi Arabia peace treaty in July 2000, Yemen's northern border was undefined. The Arabian Desert prevented any human habitation there.

The Saudi – Yemen barrier was constructed by Saudi Arabia against an influx of illegal immigrants and against the smuggling of drugs and weapons. The Independent headed an article with "Saudi Arabia, one of the most vocal critics in the Arab world of Israel's "security fence" in the West Bank, is quietly emulating the Israeli example by erecting a barrier along its porous border with Yemen."

Yemen is a developing country and in 2019 the United Nations reported that Yemen is the country with the most people in need of humanitarian aid with 24.1 million people in need.

Yemen has long existed at a crossroads of cultures with a strategic location in terms of trade on the west of the Arabian Peninsula. Large settlements for their era existed in the mountains of northern Yemen as early as 5000 BC.