The foreign ministers of the United States, Japan, Australia, and India expressed "deep concern" about the situation in the South China Sea through implicit criticism of Beijing.
The China Maritime Safety Administration announced that the country will hold live-fire exercises in one of the areas of the East China Sea on April 26.
The US deployed a large number of fighter jets near Chinese territory late last month amid ongoing tensions between Washington and Beijing that show no signs of easing.
Japan has drawn a red line around the chain of islands claimed by China in the East China Sea, poised to push back against Beijing's increasingly aggressive military actions.
Japan released its 2021 Defense White Paper, which sharply criticized China's military activities and, for the first time, addressed the issue of Taiwan.
US and Japanese ministers said on March 15 that they were concerned about the escalating tensions in the South China Sea and East China Sea, and opposed China's attempts to alter the status quo.
During Foreign Minister Wang Yi's visit to Japan, Tokyo strongly condemned the actions of Chinese ships in violating its sovereignty in the East China Sea.
Japan strongly protests the repeated presence and intrusion of Chinese ships into its territorial waters in the East China Sea, which has occurred for a record number of days this year.
The U.S. Navy has expressed concern that China's accelerated production of nuclear submarines will challenge the U.S. leadership in submarine warfare in the region.
Amid escalating US-China tensions, the US and Japan conducted joint military exercises in the East China Sea, sending a strong and firm message to China.
Japanese Defense Minister Taro Kono told the Chinese ambassador that China needs to stop its activities around the disputed islands in the East China Sea.
Japan has warned that its Self-Defense Forces are ready to respond to Chinese ships if they intrude into its territorial waters around the disputed islands in the East China Sea.
Japan considers the continued presence of Chinese ships around the Senkaku/Diaoyu Islands in the East China Sea a serious issue and warns of a firm response.
A Japanese white paper recently approved by Prime Minister Shinzo Abe accuses China of persistent encroachment near a group of islands in the East China Sea.
Amidst tensions in the Taiwan Strait, China conducted exercises in the East China Sea, marking the first-ever participation of the Type 052DL-class destroyer Zibo.
Japanese Defense Minister Taro Kono asserted that China is unilaterally attempting to alter the status quo in several disputed areas of the South China Sea and East China Sea.