Smoke billowing over the village of Qmenas on March 1 following a Russian airstrike. Photo: Ibrahim Yasouf/AFP via Getty Images

Syrian state media said on Sunday that Turkish forces downed two of its warplanes over Idlib, after Syria destroyed a Turkish drone and announced it was closing its airspace over the northwest region, AP reports.

Why it matters: Tensions are continuing to escalate between NATO ally Turkey and the Syrian regime, which is backed by Russia and has been conducting a deadly offensive in the last rebel-held areas of Idlib.

  • The result thus far has been the darkest chapter of Syria’s brutal nine-year civil war, with a massive humanitarian crisis threatening to collide with a dangerous geopolitical showdown.

The big picture: With hundreds of thousands of desperate Syrian refugees fleeing toward the Turkish border, President Recep Tayyip Erdoğan announced on Saturday he would open Turkey's border with Europe — claiming that his country cannot sustain more than the 3.6 million Syrian refugees it already hosts.

  • At least 13,000 refugees had amassed on Turkey's border with Greece on Sunday, according to the UN.
  • “Europe and others must take robust action to address this monumental challenge," a Turkish spokesman told AP. "We can’t be expected to do this on our own.”
  • Greece's Prime Minister Kyriakos Mitsotakis tweeted Sunday that the country will not accept asylum applications for one month, and that it will invoke a special provision in a key EU treaty to "ensure full European support."

Go deeper: Syria's darkest chapter

Editor's note: This story has been updated with news that Greece will turn away asylum seekers.

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Updated 43 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 2 p.m. ET: 30,588,989 — Total deaths: 953,482— Total recoveries: 20,832,830Map.
  2. U.S.: Total confirmed cases as of 2 p.m. ET: 6,745,190 — Total deaths: 198,921 — Total recoveries: 2,556,465 — Total tests: 93,150,052Map.
  3. Politics: In reversal, CDC again recommends coronavirus testing for asymptomatic people.
  4. Health: The dwindling chances of eliminating COVID-19.
  5. World: Guatemalan president tests positive for COVID-19.

Schumer: "Nothing is off the table" if GOP moves to fill Ginsburg's seat

Sen. Chuck Schumer. Photo: Tasos Katopodis/Getty Images

Senate Minority Leader Chuck Schumer told congressional Democrats on a conference call Saturday that "nothing is off the table next year" if Senate Majority Leader Mitch McConnell and his Republican allies move to fill Justice Ruth Bader Ginsburg's Supreme Court seat in the coming weeks.

Why it matters: Schumer's comments come amid calls from fellow Democrats to expand the number of judges on the Supreme Court if President Trump and Senate Republicans move to fill the newly empty seat next time the party holds a majority in the Senate.

ActBlue collects record-breaking $30 million in hours after Ginsburg's death

A makeshift memorial in honor of Justice Ruth Bader Ginsburg in front of the U.S. Supreme Court on Sept. 19. Photo: Samuel Corum/Getty Images

ActBlue, the Democratic donation-processing site, reported a record-breaking $30 million raised from 9 pm Friday to 9 am Saturday in the aftermath of Supreme Court Justice Ruth Bader Ginsburg's death, NPR writes and ActBlue confirmed to Axios.

Why it matters via the New York Times: "The unprecedented outpouring shows the power of a looming Supreme Court confirmation fight to motivate Democratic donors."