Decoded by POLITICO

An adverse allergic reaction to a covid vaccine is rare, but just how rare remains to be seen. On Wednesday, the National Institutes of Health announced a new study to try to understand the number of people experiencing moderate allergic reaction to mRNA vaccines, and why. Joanne Kenen — who had an allergic reaction to her first Pfizer dose — reports.

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The Chinese government has made clear it will remain a strategic ally of Russia despite its invasion of Ukraine. But the West wants China's help in cutting off Russia. Phelim Kine reports.

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The White House is considering a ban on Russian oil imports — even as U.S. gas prices soar and Biden takes hits on inflation. Meanwhile, CERAWeek, the nation's most important oil and gas industry conference, convenes in Houston. Ben Lefebvre reports.

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Last week, when Poland considered sending warplanes to aid Ukraine, Warsaw asked the White House to guarantee it would replace the outgoing planes with U.S.-made fighter jets. On Sunday, Secretary of State Antony Blinken said that the two countries were in talks. Paul McLeary reports.

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As the January 6 Committee prepares for its first public hearing — likely next month — some of their evidence is starting to come into shape. In a major release of its findings, filed in federal court late Wednesday, the committee suggested that its evidence supported findings that Trump himself violated multiple laws by attempting to prevent Congress from certifying his defeat. Nicholas Wu reports.

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The White House has been reluctant to declare the end of the pandemic — especially after optimism last summer was made moot by the emergence of the Delta and Omicron variants. But administration officials have pointed to vaccine and test availability — and hope that revised CDC guidance and a new 96-page plan from the Biden administration will ease political pressure and a path out of the pandemic.

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A national movement to give voting rights to legal noncitizens has found its way to New York City. Pending court battles, it will soon give 800,000 people the chance to shape local elections. Erin Durkin reports.

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Sanctions on banking, tech, weapons and more were rolled out against Russia over the weekend  — arguably historic in size and scope. But the big question remains, will they have an effect on Putin's war against Ukraine? Nahal Toosi reports.

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President Joe Biden selected D.C. Circuit Court of Appeals Judge Ketanji Brown Jackson as his nominee to succeed retiring Justice Stephen Breyer on Friday, making history by nominating a Black woman for the nation’s highest court. Josh Gertstein reports on what you need to know about the judge and her looming confirmation battle.

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Sanctions are a long-term solution to a short-term problem. They’re the lever that the United States and allies have chosen to use to punish Russia for its brazen invasion of Ukraine. But Biden made clear that any sanctions policy that hurts Americans, such as oil and gas sanctions, would be off-the-table, for now. Alex Ward reports.

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