Detailed Instructions: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Problem:Passage: The Ogaden War was a Somali military offensive between July 1977 and March 1978 over the disputed Ethiopian region Ogaden starting with the Somali Democratic Republic's invasion of Ethiopia. The Soviet Union disapproved of the invasion and ceased its support of Somalia to instead start supporting Ethiopia, whereas the United States conversely ceased its support of Ethiopia and started supporting Somalia. Ethiopia was saved from a major defeat and a permanent loss of territory due to a massive airlift of military supplies , the arrival of 16,000 Cuban troops, 1,500 Soviet advisors and 2 brigades from South Yemen, also airlifted to reinforce Harar. The Ethiopians prevailed at Harar, Dire Dawa, Jijiga and began to push the Somalis out of the Ogaden systematically. By March 1978, the Ethiopians had captured almost all of the Ogaden, prompting the defeated Somalis to give up their claim to the region. With 1/3 of the initial Somali National Army invasion force killed and 1/2 of the Somali Airforce destroyed, the war left Somalia with a disorganized and demoralized army and an angry population. All of these conditions led to a revolt in the army which eventually spiraled into a civil war and Somalia's current situation. 
Question: How many countries supported Ethiopia? 
Answer type: Number 
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
1.