As the fourth month of the Russian invasion approaches, U.S. president Joe Biden signed legislation allocating an additional $40 billion in U.S. aid to Ukraine on Saturday.

The legislation, which Congress passed with bipartisan support, increases the United States' commitment to Ukraine when the future of the conflict is unknown. Ukraine has successfully defended Kyiv, and Russia has refocused its onslaught on the country's east, but U.S. officials warn of the possibility of a protracted confrontation.

The financing is intended to help Ukraine until September, and it surpasses the $13.6 billion allocated by an earlier emergency measure.

The new law will provide $20 billion in military aid, assuring a continual flow of advanced weaponry that has been used to counter Russia's advancements. In addition, there is $8 billion in general economic support, $5 billion to handle potential worldwide food shortages caused by the collapse of Ukrainian agriculture and more than $1 billion to assist refugees.

Biden signed the bill under unique conditions. According to a White House official, a U.S. official delivered a copy of the bill for the president to sign on a commercial airplane to Seoul when he was in Asia.

The logistics underscore the sense of urgency surrounding the continuation of U.S. support for Ukraine and Biden's diplomatic challenges. Even as he attempts to realign American foreign policy to fight China, he continues to allocate resources to the most significant European conflict since World War II.

Biden also signed a separate bill meant to expand access to infant formula in the United States, where supplies remain scarce. The Act will allow the Special Supplemental Nutrition Program for Women, Infants, and Children, or WIC, benefits to purchase different varieties of infant formula.