The American Secretary of State Rex Tillerson saysNorth Korea could signal that it is ready for talks by halting its missile tests.On Monday, Tillerson said, "We've not had an extended period of timewhere they have not taken some type ofprovocative action by launching ballistic missiles."The top U.S. diplomat went on to saythat the strongest signal North Korea could sendwould be to "just stop these missile launches."Tillerson spoke in Manilla, the Philippines, where he was taking partin a meeting of the Association of Southeast Asian Nations (ASEAN).His comments follow a United Nations Security Council vote on Saturday.All members of the council, including China and Russia,voted to place additional sanctions on North Koreafor its missile tests on July 4 and 28.China, a North Korean ally, urged the country to halt its missile and nuclear testssaying the North should not "provoke international society's goodwill."The vote, Tillerson said, showed that the international communityfinds North Korea's actions unacceptable.He said he hoped that North Koreawould choose a different pathway that would enable talks in the future."When the conditions are right then we can sit and have a dialoguearound the future of North Koreaso that they feel secure and prosper economically," he said.In a statement late Sunday, the White House said President Donald Trumpspoke to South Korea's president Moon Jae-in by telephone.The statement said the two leaders agreedthat they would fully carry out the sanctions.They urged "the international community to do so as well."They also agreed that North Korea"poses a grave threat" to their countries and Japan.On Monday, the North Korean government denounced the new UN restrictions.North Korean state operated mediasaid the North threatened to take revenge on the U.S.Through its media, North Korea also restated its positionthat sanctions will not force it to negotiate over its nuclear program.The country also threatened to take an "action of justice"although it did not say what that would be.The sanctions approved by the U.N. Security Councilaim to cut about $1 billion from North Korea's$3 billion in yearly export income.The UN Security Council resolution bars North Korean exports of coal,iron, iron ore, lead, lead ore and seafood.It also bans nations from increasing the number of North Korean workersthat they permit in their respective countries.The resolution says the move is to punish North Koreafor using its economic gains to develop its weapons programs.The U.S. ambassador to the U.N., Nikki Haley, said the resolution wasthe "single largest economic sanctions packageever leveled against" North Korea.And the top U.S. diplomat for Asia, Susan Thorntonnoted the importance of China continuing to carry out the sanctions.Chinese Foreign Minister Wang Yi spoke to North Korean Foreign MinisterRi Yong Ho at the ASEAN meeting in Manila.Chinese foreign minister Wang said that he advised North Koreato seek a "double suspension" plan to ease tensions on the Korean peninsula.Such a plan calls for North Korea to stop its nuclear and missile testsin exchange for a suspension of joint military exercisesbetween the U.S. and South Korea.However, Thornton said the U.S. is not considering endingits training exercises with South Korea.