Mr. Trump indicated last month that he intends to travel to China, but such a visit will hinge on U.S. concessions on Taiwan, according to a Chinese official who disclosed a key Beijing demand for a summit between Mr. Trump and Mr. Xi.

Wu Xinbo, dean of the Institute of International Studies at Fudan University in Shanghai, said last week that Mr. Trump must declare that the U.S. does not support formal independence for Taiwan, viewed by Beijing as a breakaway province.

Mr. Wu, an adviser to the Chinese Foreign Ministry, also said the U.S. and China must speed up preparations for a summit if the meeting is to take place in the fall. He suggested that Chinese Foreign Minister Wang Yi should meet with Secretary of State Marco Rubio, perhaps in a third country. Mr. Rubio departs Tuesday for his first visit to Asia as secretary to attend three regional leaders’ meetings in Kuala Lumpur, the State Department announced Monday.

Iran-backed Houthi militants in Yemen have ramped up attacks during recent days on commercial vessels in the Red Sea for the first time since U.S. military forces conducted waves of airstrikes against the group in March. The attacks threaten to undermine the delicate ceasefire with Iran and the Trump administration’s push for a peace deal between Israel and Hamas militants, who are also supported by Tehran.

The Associated Press reports that the Houthis continued an hourslong attack Tuesday targeting a Liberian-flagged cargo ship in the Red Sea, after claiming to have sunk another vessel in a Sunday assault that involved drones, missiles, rocket-propelled grenades and small arms fire.

The two attacks and a round of Israeli airstrikes early Monday targeting the rebels raised fears of a widening new Houthi campaign against shipping that could again draw in U.S. and Western forces — or a renewal of the U.S  bombing mission against the Houthis. The group targeted more than 100 merchant vessels with missiles and drones between November 2023 and January.

During a dinner at the White House Monday night, Israeli Prime Minister Benjamin Netanyahu endorsed Mr. Trump’s proposal to relocate Palestinians from Gaza and turn the territory into a luxury waterfront development, calling the president’s idea for the region a “brilliant vision.”

Mr. Trump stirred controversy in February when he said that some 2 million Palestinians could be relocated so the U.S. could take over the territory and develop it into an upscale resort. He later walked back the suggestion that Gaza could become “the Riviera of the Middle East.”

Mr. Witkoff is traveling Tuesday to Qatar, where Israeli officials are holding indirect talks with Hamas in pursuit of a new Gaza ceasefire and hostage-release deal.

Amid the wars and crises rampant in Ukraine, the Middle East and East Asia, “we are witnessing an evil flock of ‘birds of a feather’ wreaking havoc,” write Abraham Cooper and Greg Scarlatoiu, who assert that “the dictatorial, genocidal regimes of Iran, Russia, China and North Korea constitute an ‘axis of tyranny.’”

“North Korea has become a major exporter of instability and violence to troubled regions, including through proliferation to terrorist groups bent on destroying Israel, and actively abets Russia’s invasion of Ukraine through the exportation of millions of artillery shells, ballistic missiles and the deployment of more than 11,000 special forces,” write Mr. Cooper and Mr. Scarlatoiu, respectively the chair emeritus of the U.S. Commission of International Religious Freedom and the president and CEO of the Committee for Human Rights in North Korea.

They add that “this new world order — with [Russian President] Vladimir Putin and the Ayatollah [Ali] Khamenei in the lead — has increasingly been turning to the North Korean arsenal of tyranny to continue to proliferate aggression and violence to Kyiv, Tel Aviv and beyond.”

Without a satisfactory resolution involving Iran’s capability to produce nuclear weapons, the Islamic republic is preparing for global violence in the name of religion, with Israel, the U.S. and Europe prime targets for Iranian-sponsored terrorism, according to Rod Blagojevich.

The former Illinois governor writes in an op-ed for The Washington Times that Tehran “developed a base of operations” in Bosnia during the 1990s, waging war with Bosnian Muslims to establish a “European copy of Hezbollah.”

“With the recent defeat of Hezbollah in Lebanon, Hamas in Gaza and the Assad regime in Syria,” Mr. Blagojevich writes, “Iran may now be looking to Bosnia-Herzegovina as the next place to fill the void and establish its principal base of operations to replace Lebanon in exporting terrorism.”

• July 9 — Prospects for a U.S.-Korea Econ Reset: Opportunities and Obstacles, Center for Strategic & International Studies

• July 10 — Federal IT Efficiency Summit, GovCIO Media & Research

• July 11 — The Han Kuang Exercise and the Taiwanese Military’s Road to Readiness, Hudson Institute

• July 13-17 — GenAI Summit, GenAI Week

• July 15 — Rare Earth Mining and Conflict Economies in Northern Myanmar, Stimson Center

• July 15-18 — Aspen Security Forum, Aspen Institute

• July 16 — Global Swing States and the New Great Power Competition, Center for a New American Security