Yemen

Yemen Country Profile

Officially the Republic of Yemen is a country at the southern end of the Arabian Peninsula in Western Asia and bordered by Saudi Arabia, the Red Sea and Oman.
Yemen's constitutionally stated capital is the city of Sana’a but the city has been under Houthi rebel control since February 2015. 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.

Why are people fleeing Yemen for safety in other countries?

The Yemeni civil war is an ongoing conflict that began in 2015 between two factions: 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.
A coalition led by Saudi Arabia launched military operations against the Houthi by using air strikes to restore the former Yemeni government. The United States provided intelligence and logistical support for the campaign.
Over 100,000 people have now been killed in Yemen, including more than 12,000 civilians, as well as estimates of more than 85,000 dead as a result of an ongoing famine due to the war.
The conflict has been widely seen as an extension of the Iran–Saudi Arabia proxy conflict and as a means to combat Iranian influence in the region. In 2018, the United Nations warned that 13 million Yemeni civilians face starvation in what it says could become "the worst famine in the world in 100 years."
The international community has sharply condemned the Saudi Arabian-led bombing campaign, which has included widespread bombing of civilian areas.
The US has been providing bombs to aid the Saudi forces and airstrikes in Yemen. In March 2019, this has led the United States Senate to pass a resolution to end US support of Saudi Arabia. This was vetoed by President of the United States Donald Trump.
In the UK, in June 2019, the Court of Appeal ruled that British arms sales to Saudi Arabia are unlawful.
The conflict and the suffering continues.

References:
wikipedia
Refugee from Lancaster