ADDITIONAL UN sanctions designed to force Liberia to break its ties with rebels in Sierra Leone will come into effect on Monday for 12 months, the president of the Security Council, James Cunningham, said Friday. The sanctions include a ban on imports of all Liberian rough diamonds and restrictions on air travel by senior officials. Cunningham, the acting US ambassador to the United Nations, said steps taken by Liberia were “not sufficient” to satisfy the council’s demand that it “immediately cease its support” for the rebel Revolutionary United Front (RUF). Liberian President Charles Taylor said the sanctions would add to his country’s three-billion-dollar debt, increase the burden of poverty and undermine efforts to combat the HIV/AIDS epidemic. He said that Liberia has broken with the RUF. -AFP