Russia and Chinese nuclear-capable bombers entered the U.S. Air Defense Identification Zone (ADIZ) near Alaska on Wednesday, prompting North American Aerospace Defense Command jets to intercept the aircraft.

A command statement said two Russian Tu-95s and two Chinese H-6 bombers did not actually enter American or Canadian sovereign airspace. Sen. Dan Sullivan said the joint bomber flights highlight growing military cooperation between Beijing and Moscow. “Make no mistake, this is an escalation — the first time Russia and China have sent a joint bomber task force into the Alaska ADIZ,” the Alaska Republican said in a statement.

The development came after the Pentagon’s announcement this week of plans to counter China and Russia in the Arctic, in part by building up new military facilities at Pituffik Space Base on the northwest coast of Greenland and activating the Army’s 11th Airborne Division, known as the Arctic Angels in Alaska.

A fiery Mr. Netanyahu vowed to press ahead with Israel’s war against Hamas militants until they surrender and free scores of Israeli and foreign hostages, and urged lawmakers to send more military aid to the Jewish state.

Mr. Netanyahu made no mention of a cease-fire or momentary pause in fighting. He also rejected findings by the International Court of Justice criticizing Israel’s campaign in the Gaza Strip and settlements approved by his government on land claimed by the Palestinians.

Thousands of demonstrators protesting Israel’s war in Gaza marched through Washington as Mr. Netanyahu was addressing Congress. The protesters, some of whom faced off against the police and were pepper-sprayed, burned an American flag outside the city’s Union Station. One spray-painted “Hamas is comin” on a monument outside the station, a short walk from the U.S. Capitol building.

Mr. Netanyahu had harsh words for those protesting. He cited intelligence reports that Iran, Israel’s implacable enemy, has helped finance protests occurring inside the United States in recent months.

The U.S. Treasury Department’s Office of Foreign Assets Control (OFAC) has imposed financial sanctions on Chinese companies and their executives for supplying missile- and space-related goods to North Korea.

The action announced Wednesday marked a rare acknowledgment by the U.S. government that North Korean nuclear missiles threatening U.S. cities were built with the aid of Chinese technology and components. A Treasury statement noted that North Korea has repeatedly violated U.N. resolutions with missile launches, including a recent failed attempt to orbit a military satellite.

National Security Correspondent Bill Gertz reports that American intelligence satellites in 2012 first detected China’s transfer of large, 16-wheel transporter-erector launchers now used for North Korean mobile intercontinental ballistic missiles. The mobile missile launchers were produced by the China Aerospace Science and Industry Corp., a large, state-owned missile manufacturer.

A trash-carrying North Korean balloon landed in the compound of South Korean President Yoon Suk Yeol in Seoul’s Yongsan district.

Washington Asia Editor Andrew Salmon reports from Seoul that the development on Wednesday was embarrassing for South Korean security officials, given that the intrusion was the second such breach of the nation’s most sensitive air space. In December 2022, North Korean drones penetrated South Korean defenses and loitered above the presidential compound.

Security officials have not detailed what was in the balloon that penetrated the no-fly zone and did not reveal if Mr. Yoon was in his office at the time. Officials said an investigation by a chemical, biological and radiological response team showed the North Korean trash balloon has been retrieved from the presidential compound and did not present a danger of contamination.

Many countries, such as Russia, have already sold off all their U.S. Treasury debt holdings, according to E.J. Antoni and Peter St. Onge, who write that China, the second-largest foreign holder of U.S. debt, is “selling them hand-over-fist, having sold one-third in the past five years.”

“If the largest holder, Japan, has a fire sale in this environment, it would be the equivalent of a margin call on the U.S. Treasury Department — the moment the bank tells you to cough up more cash or they cut you off,” write Mr. Antoni and Mr. St. Onge.

“People the world over are losing confidence in the federal government’s ability to repay its debts and no longer see the dollar as a secure asset,” they write. “In just 3½ years, the dollar has lost one-fifth of its value, wiping out trillions of dollars of bondholders’ wealth around the world.”

The U.S. government should impose “a total ban on lobbying” by China, writes Frank Wolf, the former congressman and former member of the U.S. Commission on International Religious Freedom (USCIRF).

Mr. Wolf writes about a section of the 2024 USCIRF Annual Report that states: “It is imperative to ban lobbying for the Chinese government, its state-affiliated commercial entities, and their interests while the government continues its egregious acts of religious persecution. These harsh actions impact every faith group in China with the leaders of the Catholic Church and Protestant house churches imprisoned and even ‘disappeared.’ Cultural genocide devastates Tibet, where Buddhist monks die in prison. … Congress cannot look the other way.”

• July 26 — Breathing New Life into US Policy on North Korean Human Rights, Hudson Institute

• July 26 — How Strong is China’s Navy? Brookings Institution

• July 26 — Unpacking ASEAN’s Relationship with Myanmar, Stimson Center

• July 26 — Gaza’s Water Crisis: What Can Be Done, Center for Strategic and International Studies (CSIS)

• July 29 —Yezidi Genocide and the Struggle for Recovery, Atlantic Council

• July 30 — Nuclear Posture Review: Building Our Strength in 2025, The Heritage Foundation