MANILA, Philippines >> Philippine President Rodrigo Duterte has retracted a decision to end a key defense pact with the United States, allowing large-scale combat exercises between U.S. and Philippine forces that at times have alarmed China to proceed.

Duterte’s decision was announced by Defense Secretary Delfin Lorenzana in a joint news conference with visiting U.S. counterpart Lloyd Austin in Manila overnight. It was a step back from the Philippine leader’s stunning vow early in his term to distance himself from Washington as he tried to rebuild frayed ties with China over years of territorial rifts in the South China Sea.

“The president decided to recall or retract the termination letter for the VFA,” Lorenzana told reporters after an hour-long meeting with Austin, referring to the Visiting Forces Agreement. “There is no termination letter pending and we are back on track.”

Austin thanked Duterte for the decision, which he said would further bolster the two nations’ 70-year treaty alliance.

“Our countries face a range of challenges, from the climate crises to the pandemic and, as we do, a strong, resilient US-Philippine alliance will remain vital to the security, stability and prosperity of the Indo-Pacific,” Austin said. “A fully restored VFA will help us achieve that goal together.”

Terminating the pact would have been a major blow to America’s oldest alliance in Asia, as Washington squares with Beijing on a range of issues, including trade, human rights and China’s behavior in the South China Sea, which Beijing claims virtually in its entirety.

The U.S. military presence in the region is seen as a counterbalance to China, which has used force to assert claims to vast areas of the disputed South China Sea, including the construction of artificial islands equipped with airstrips and military installations. China has ignored and continues to defy a 2016 international arbitration ruling that invalidated its historic basis.

China, the Philippines, Vietnam and three other governments have been locked in the territorial standoff for decades. The U.S. doesn’t lay any claim to the busy waterway and has sailed Navy warships close to Chinese-claimed islands on so-called freedom of navigation operations in a challenge to Beijing.

Beijing has warned Washington to stay away from what it describes as a purely Asian dispute.

In a speech in Singapore on Tuesday, Austin said that Beijing’s claim to the South China Sea “has no basis in international law” and “treads on the sovereignty of states in the region.” He said the U.S. supports the region’s coastal states in upholding their rights under international law, and is committed to its defense treaty obligations with Japan and the Philippines.

Duterte notified the U.S. government in February last year that the Philippines intended to abrogate the 1998 agreement, which allows large numbers of American forces to join combat training with Philippine troops and sets legal terms for their temporary stay.

The pact’s termination would have taken effect after 180 days, but Duterte has repeatedly delayed the decision. While it was pending, the U.S. and Philippine militaries proceeded with plans for combat and disaster-response exercises but canceled larger drills last year due to the coronavirus pandemic.

U.S. and Philippine forces engage in about 300 activities each year, including the Balikatan, or shoulder-to-shoulder, exercises, which involve thousands of troops in land, sea and air drills that often included live fire. They’ve sparked Chinese protests when they were held on the periphery of the sea Beijing claims as its own.

The Balikatan exercises resumed last April but were considerably scaled down due to continuing COVID-19 outbreaks and lockdowns.

A Philippine military official told the AP that the U.S. continued to provide intelligence and satellite and aircraft surveillance photos of Chinese activities in the South China Sea despite Duterte’s earlier threat to abrogate the VFA. The U.S. images have helped the Philippines to become aware of encroachments and lodge diplomatic protests, said the military official, who spoke on condition of anonymity for lack of authority to speak publicly.

Lorenzana said he was unaware of the reason behind Duterte’s change of heart. The brash-talking president, who has been under intense pressure to contain one of Southeast Asia’s worst outbreaks, warned in December that he would proceed to abrogate the VFA if the U.S. did not provide at least 20 million doses of COVID-19 vaccine.

“No vaccine, no stay here,” Duterte said then in blunt remarks that one Filipino senator said “may have given the impression that the Philippines is a nation of extortionists.”

The Philippines recently received at least 3.2 million doses of Johnson & Johnson’s COVID-19 vaccine from the U.S. through the COVAX global vaccine-sharing program, and has been assured of more American aid. President Joe Biden has said America’s vaccines were being donated to poorer countries to save lives and “don’t include pressure for favors or potential concessions.”