WASHINGTON (AP) 鈥 Sweeping tariffs set to be imposed by President Donald Trump next month may overshadow his top diplomat鈥檚 first official trip to Asia this week 鈥 just as the U.S. seeks to boost relations with Indo-Pacific nations to counter China鈥檚 growing influence in the region.

Trump on Monday sent about higher tariffs if they don't make trade deals with the U.S., including to a number of Asian countries. The move came just a day before departed for a Southeast Asian regional security conference in Malaysia.

Top diplomats and senior officials from at least eight countries that Trump has targeted for the new tariffs, which would go into effect on Aug. 1, will be represented at the annual Regional Forum in Kuala Lumpur that Rubio will attend on Thursday and Friday.

State Department officials say tariffs and trade will not be Rubio's focus during the meetings, which Trump's Republican administration hopes will prioritize maritime safety and security in , where China has become increasingly aggressive toward , as well as combating transnational crime.

However, Rubio may be hard-pressed to avoid the tariff issue that has vexed some of America's closest allies and partners in Asia, including Japan and South Korea, which Trump says would face absent a deal. Neither of those countries is a member of ASEAN, but both will be represented at the meetings in Kuala Lumpur.

Rubio's 鈥渢alking points on the China threat will not resonate with officials whose industries are being battered by 30-40% tariffs,鈥 said Danny Russel, vice president of the Asia Society Policy Institute and a former assistant secretary of state for East Asia and the Pacific during the Obama administration.

鈥淚n fact, when Malaysian Prime Minister Anwar Ibrahim last week said ASEAN will approach challenges 鈥榓s a united bloc鈥 鈥 he wasn鈥檛 talking about Chinese coercion but about U.S. tariffs,鈥 Russel said.

Among ASEAN states, Trump has so far announced up to 40% tariffs on at least six of the 10 members of the bloc, including the meeting host Malaysia, which would face a 25% tariff mainly on electronics and electrical product imports to the United States.

Southeast Asian countries not yet targeted by the U.S. include Brunei, the Philippines, Singapore and Vietnam, which recently agreed to a trade deal with Trump. The Trump administration has courted most Southeast Asian nations in a bid to blunt or at least temper China's push to dominate the region.

In Kuala Lumpur, Rubio also will likely come face-to-face with the foreign ministers of two of America's biggest adversaries: China and Russia. U.S. officials could not say if meetings with either are planned for the short time 鈥 about 36 hours 鈥 that Rubio will be in Malaysia.

Russel noted that Chinese Foreign Minister Wang Yi is a veteran of such gatherings and 鈥渇luent in ASEAN principles and conventions,鈥 while Rubio 鈥渋s a rookie trying to sell an 鈥楢merica First鈥 message to a deeply skeptical audience.鈥

Issues with both countries remain substantial, particularly over Ukraine.

Trump on Tuesday expressed his , saying, 鈥淚鈥檓 not happy with him, I can tell you that much right now" as Moscow ramps up attacks in Ukraine amid the American leader's push for a peace deal.

Trump also announced that the U.S. would after the Pentagon announced a last week.

U.S. officials continue to accuse China of resupplying and revamping Russia's military industrial sector, allowing it to produce additional weapons with which it can attack Ukraine.

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