The number of military personnel in Yemen is relatively high; in sum, Yemen has the second largest military force on the Arabian Peninsula after Saudi Arabia. In 2012, total active troops were estimated as follows: army, 66,700; navy, 7,000; and air force, 5,000. In September 2007, the government announced the reinstatement of compulsory military service. Yemen's defense budget, which in 2006 represented approximately 40 percent of the total government budget, is expected to remain high for the near term, as the military draft takes effect and internal security threats continue to escalate.