
An outbreak of cholera began in Yemen in October 2016, and is ongoing as of August 2020. In February and March 2017, the outbreak declined during a wave of cold weather, but the number of cholera cases resurged in April 2017. As of October 2018, there have been more than 1.2 million cases reported, and more than 2,500 people—58% children—have died in the Yemen cholera outbreak, which the United Nations deemed the worst humanitarian crisis in the world at that time.

The Battle of Aden was a conflict between the Southern Transitional Council (STC) and the Yemeni government around the headquarters in Aden.

The Battle of Al Hudaydah, codenamed as Operation Golden Victory, is a major Saudi-led coalition assault on the port city of Al Hudaydah in Yemen. It is spearheaded by the United Arab Emirates and Saudi Arabia and has been considered as the largest battle since the start of Saudi Arabian-led intervention in Yemen in 2015.
On 22 April 2018, an airstrike by the Saudi Arabian-led coalition hit a wedding in the Bani Qa'is District of Hajjah Governorate, Yemen. Casualty estimates vary, with the Houthi-owned Al-Masirah reporting the toll later that day to be at least 33 civilians including the bride, while other estimates are higher. Forty-five other people were injured.

Very Severe Cyclonic Storm Luban was the third tropical cyclone to affect the Arabian Peninsula during the 2018 North Indian Ocean cyclone season, after cyclones Sagar and Mekunu in May. Luban developed on October 6 in the central Arabian Sea, and for much of its duration, maintained a general west-northwestward trajectory. On October 10, the India Meteorological Department (IMD) upgraded Luban to a very severe cyclonic storm – equivalent to a Category 1 hurricane – and estimated maximum sustained winds of 140 km/h (85 mph). The storm made landfall on October 14 in eastern Yemen, as a cyclonic storm. The storm quickly weakened over the dry, mountainous terrain of the Arabian Peninsula, before dissipating on October 15.

Extremely Severe Cyclonic Storm Mekunu was the strongest storm to strike Oman's Dhofar Governorate since 1959. The second named storm of the 2018 North Indian Ocean cyclone season, Mekunu developed out of a low pressure area on May 21. It gradually intensified, passing east of Socotra on May 23 as a very intense tropical cyclone. On May 25, Mekunu reached its peak intensity. The India Meteorological Department estimated 10 minute sustained winds of 175 km/h (110 mph), making Mekunu an extremely severe cyclonic storm. The American-based Joint Typhoon Warning Center estimated slightly higher 1 minute winds of 185 km/h (115 mph). While at peak intensity, Mekunu made landfall near Raysut, Oman, on May 25. The storm rapidly weakened over land, dissipating on May 27.

Cyclonic Storm Sagar was the strongest tropical cyclone to make landfall in Somalia in recorded history until Gati in 2020, and the first named cyclone of the 2018 North Indian Ocean cyclone season. Forming on May 16 east of the Guardafui Channel, Sagar intensified into a cyclonic storm on the next day, as it gradually organized. The storm turned to the west-southwest and traversed the entirety of the Gulf of Aden, making landfall over northwestern Somalia on May 19, farther west than any other storm on record in the North Indian Ocean. Sagar weakened into a remnant low on May 20.

The Taiz campaign (2015–present) is a protracted military confrontation between opposing Yemeni forces in the city of Taiz for control of the city and surrounding area. The battle began one month after the start of the Yemeni Civil War.

On 30 April 2018, the United Arab Emirates (UAE) deployed more than a hundred troops with artillery and armored vehicles to the Yemeni archipelago of Socotra in the Guardafui Channel without prior coordination with Yemen. The initial deployment consisted of UAE military aircraft carrying more than fifty UAE soldiers and two armored vehicles, followed by two more aircraft carrying more soldiers, tanks and other armored vehicles. Al Jazeera reported that shortly after landing, UAE forces dismissed Yemeni soldiers stationed at administrative installations such as Socotra Airport and seaports until further notice, and the flag of the United Arab Emirates was raised above official government buildings in Hadibu.

The Yemeni Civil War is an ongoing multi-sided civil war that began in late 2014 mainly between the Abdrabbuh Mansur Hadi-led Yemeni government and the Houthi armed movement, along with their supporters and allies. Both claim to constitute the official government of Yemen.