Why is Yemen war torn?

Have you ever wondered why there are ads for humanitarian donations towards Yemen? Well, like the reason behind Africa's poverty, it goes a long way back.
Yemen is a country on the Arabian Peninsula and is neighboured by Saudi Arabia in the north and Oman in the east. During the 16th century, a Muslim-Turk ruled empire called the Ottoman Empire started intruding Yemen's land and by the time a British colony was set up in the 19th century, the Ottoman Empire occupied the north of the country.

Upon the Ottoman Empire's collapse in the early 1920s, Yemen was still divided as the British controlled the south and a Shia Iman who was from the Zaidi sect held power in the north. With decolonization spreading like wildfire in the early cold war period, the south became independent in the 1960s but not without a brutal war between both factions. This war saw both factions being supported by Egypt and Saudi Arabia who were in turn supported by the Soviet Union (Russia and 15 other countries) and the United States. The winner was the Yemen Arab Republic who had Ali Abdullah Saleh become the state's leader in 1978.

War would begin in Yemen again in the 1970s and this time, a vote was cast which sealed the country's fate, a union between the two politically different sides of Yemen in 1990 which was recognised by the ailing Soviet Union.

The current war in Yemen was triggered by the Shi'ite practising Houthis who opposed against a democratic president. Since the war began, the Houthis gained support from Iran and are not wanted by the Saudis who had underestimated their powers as terrorists in lieu of freedom fighters. We say unwanted in terms of them not being welcome by the Saudis. The Houthis have triggered 6 wars and are heavily armed and dangerous! They have also occupied the nation's capital and Unesco Heritage site, Sana'a. The war has caused the national currency to become worthless, essential food, water and fuel supplies to disappear or become sparse which has seen the rise of malnutrition and the chances of a famine in Yemen are rising.