Peter Kenilorea went on to win the 1980 Solomon Islands general election, serving as PM until 1981, when he was replaced by Solomon Mamaloni of the People's Alliance Party (PAP) after a no confidence vote. Mamaloni created the Central Bank and national airline, and pushed for greater autonomy for individual islands of the country. Kenilorea returned to power after winning the 1984 election, though his second term lasted only two years before he was replaced by Ezekiel Alebua following allegations of misuse of French aid money. In 1986 the Solomons helped found the Melanesian Spearhead Group, aimed at fostering cooperation and trade in the region. After winning the 1989 election Mamaloni and the PAP returned to power, with Mamaloni dominating Solomon Islands politics from the early to mid 1990s (save for the one year Premiership of Francis Billy Hilly). Mamaloni made efforts to make the Solomons a republic, however these were unsuccessful. He also had to deal with the effects of the conflict in neighbouring Bougainville which broke out in 1988, causing many refugees to flee to the Solomons. Tensions arose with Papua New Guinea as PNG forces frequently entered Solomons territory in the pursuit of rebels. The situation calmed down and relations improved following the end of the conflict in 1998. Meanwhile, the country's financial situation continued to deteriorate, with much of the budget coming from the logging industry, often conducted at an unsustainable rate, not helped by Mamaloni's creation of a 'discretionary fund' for use by politicians, which fostered fraud and corruption. Discontent with his rule led to a split in the PAP, and Mamaloni lost the 1993 election to Billy Hilly, though Hilly was later sacked by the Governor-General after a number of defections caused him to lose his majority, allowing Mamloni to return to power in 1994, where he remained until 1997. Excessive logging, government corruption and unsustainable levels of public spending continued to grow, and public discontent caused Mamaloni to lose the 1997 election. The new Prime Minister, Bartholomew Ulufa'alu of the Solomon Islands Liberal Party, attempted to enact economic reforms, however his Premiership soon became engulfed in a serious ethnic conflict known as 'The Tensions'.