US Secretary of State Antony Blinken warned Monday that Ukraine's gains over two years of fighting are in doubt without new US funding, as NATO's chief visited to lobby Congress. Tens of billions of dollars in US aid has been sent to Ukraine since Russia's invasion in February 2022, but Republican lawmakers have grown reluctant to support Kyiv. As NATO Secretary-General Jens Stoltenberg made the case on a visit to Washington, Blinken offered an increasingly dire picture of Ukraine's prospects without US approval of the so-called supplemental funding.

SEE WHY REPUBLICANS ARE OPPOSED TO UKRAINE SUPPORT

The ways food is produced and consumed across the world is racking up hidden costs in health impacts and environmental damage amounting to some 12 percent of world GDP a year, according to a new report Monday. In the research, a consortium of scientists and economists found that transforming food systems across the world could prevent 174 million premature deaths, help the world meet its climate goals, and provide economic benefits of $5 trillion to $10 trillion.

HOW THE POTENTIAL WORLD-SAVING STRATEGY WOULD WORK

Storied auction house Sotheby's reported on Monday that sales had dipped last year to $7.9 billion, down $100 million from the record-breaking 2022 which was lifted by demand following the pandemic. The $7.9 billion total for 2023, which includes everything from art auctions to classic car sales, is down 0.8 percent from the previous year, but up 40 percent up on 2019, the last year before the pandemic hit.

SEE WHAT'S SLOWING THE SALES EXPLOSION OF AUCTIONS

Who opened Sotheby's and when? What is its highest-selling item ever?

Monday's answer: Novak Djokovic has the most Australian Open men's singles titles with 10, but Margaret Court has the most overall with 11.