Yugoslavia, East Germany and Poland, enjoyed excellent relations with Bangladesh. The Soviet Union supplied several squadrons of MiG-21 planes for the Bangladesh Air Force. Domestically, Rahman's regime became increasingly authoritarian. There was an insurgency by the radical socialist Jashod, as well as agitation by pro-business and conservative forces, who felt the Awami League was unfairly taking exclusive credit for the liberation struggle. Rahman imposed a three-month state of emergency in 1974 to quell protests. He formed the Jatiya Rakkhi Bahini, which was accused of human rights abuses. The Jatiya Rakkhi Bahini was also distrusted by many in the Bangladesh Army. Economically, Rahman embarked on a huge nationalisation programme that failed to deliver the benefits intended. Soviet and Indian aid also failed to materialise in the desired quantity. The Bangladesh famine of 1974 was a major economic blow and humanitarian crisis. In January 1975, Sheikh Mujib assumed the presidency with extraordinary powers, dissolved the parliamentary system, and established a one party state. Various political parties were merged into a sole legal national party, the Bangladesh Krishak Sramik Awami League, popularly known by its acronym BAKSAL. Most Bangladeshi newspapers were banned, except for four nationalised dailies. Sheikh Mujib quickly lost the support of most social groups in Bangladesh. The failure of his economic policies alienated the population. From "Father of the Nation", he had by 1975 fallen to what journalist Anthony Mascarenhas described as "the most hated man in Bangladesh". On 15 August 1975, a group of junior army rebels assassinated Sheikh Mujib and most of his family at his private residence in Dhaka. Military coups and presidential regimes First martial law and Zia administration The coup leaders installed Vice-President Khondaker Mostaq Ahmad as Sheikh Mujib's immediate successor. A staunch conservative, Ahmad promulgated martial law and jailed many prominent confidantes of Sheikh Mujib, including Bangladesh's first Prime Minister Tajuddin Ahmad. The jailed leaders were executed on 3 November 1975. Ahmad reshuffled the leadership of the Bangladesh Armed Forces, paving the way for the country's future military dictatorship. A counter-coup led by Brigadier General Khaled Mosharraf overthrew Ahmad from the presidency on 6 November 1975. The chief justice, Abu Sadat Mohammad Sayem, was installed as president. Mosharraf was killed by renegade socialist troops led by Abu Taher on 7 November 1975. The army chief, Lieutenant General Ziaur Rahman, emerged as the country's most powerful figure in 1976. He served as deputy martial law