Over 2,000 Southwest flights were canceled between Saturday and Monday. The airline cited causes including weather, air traffic control and an inability to move flight crews and planes.

Severe weather moved across the Southern Plains, spawning at least two tornadoes in Oklahoma and bringing lightning and heavy rain to parts of Arkansas, Kansas, Missouri and Texas.

Gyms, barber shops and pubs were finally allowed to reopen, with some restrictions, after more than three months of lockdown. With vaccinations rising and new coronavirus cases falling, residents cautiously celebrated 'Freedom Day.'

Secretary of State Antony J. Blinken said the overhauled agreement would open a new chapter in which the countries would work as equal partners to confront criminal activity and the flow of illegal drugs.

The federal investigation, known as Operation Varsity Blues, snared more than 50 parents, coaches, exam administrators and others in a scheme that had children fraudulently admitted as athletic recruits to some of the most prestigious universities in the country.

The Norwegian Nobel Committee awarded the Peace Prize to Dmitri A. Muratov, a Russian newspaper editor, along with a fellow journalist, Maria Ressa of the Philippines, for their work seeking to bolster press freedoms.

The Labor Department reported that the economy had added 194,000 jobs in September, well below the half-million forecasted. President Biden, however, expressed optimism, pointing to wage growth and an unemployment rate below 5 percent.

Maria Ressa, one of two journalists awarded the Nobel Peace Prize for promoting free press, said the Philippine government had filed 10 arrest warrants against her and banned her from traveling.

The journalists, Maria Ressa of the Philippines and Dmitri A. Muratov of Russia, were recognized for their work in promoting freedom of expression in their home countries.

António Guterres, the United Nations secretary general, assailed the imbalance of Covid-19 vaccine distribution between rich and poor countries as he sought $8 billion to help narrow the divide.