The "Z" symbol was initially spotted on Russian tanks and other military vehicles but it has quickly been embraced by some as a show of support for Russia's invasion of Ukraine.
News reports on Monday alone had two examples of the symbol being used…
Terminally ill children in the Russian city of Kazan were encouraged to stand outside in the snow with their mothers to form the letter to show support for the invasion
And Russian gymnast Ivan Kuliak sparked condemnation while wearing the symbol on Saturday at a gymnastics World Cup event in Doha
Some say it is Z for За победу - pronounced "za pobedu" (meaning "for the victory"), others say it is for "Zapad" (West).
Many have noted its similarity to the swastika - the symbol used by Nazi Germany in the Second World War - nicknaming it "Putin's swastika"
The Russian defence ministry appears to have confirmed the first option - with the "Z" super-imposed, along with the Russian За победу - "for the victory" on a recent Instagram post
It was also thought that the "Z" is a way for Russia's military to identify its own forces - a way of preventing incidents such as friendly fire
While other reports have said that the symbols are a way of denoting the origins of the forces
For example, some have said that the "Z" denotes forces from Russia's eastern district, while the "Z" inside a square seen on other Russian vehicles means the forces are from Crimea, which was annexed by Russia in 2014
In the early days of the war, Sky News's data and forensics team reported that the "Z" symbol had been seen inside squares and triangles as well as on its own
In more recent days, the symbol has been seen in Russia on people's cars, on T-shirts, on vans with business logos and even on war supporters' social media avatars.
Ukraine's president has told Sky News that his country cannot stop the war against Russia on its own and that millions could die if the world does not act now to stop the bombing
Speaking to Sky News' @AlexCrawfordSky inside the leader's office in Ukraine's capital city, Volodymyr Zelenskyy reiterated his call for the West to impose a no-fly zone
He accused countries of being indecisive on the issue of "closing" the skies against what he called "the Nazis" and said of Western nations: "You can't decide to close or not to close... you can't decide.
"If you are united against the Nazis and this terror, you have to close."
We can see on Google Street View the distinctive blue shopfront from the video, on the left, and the slanted-roof next to it, as well as the burgundy-framed house opposite and matching front-gate and telegraph poles
While the UN says over 1.7 million people have fled Ukraine so far, some of the country's elderly citizens are refusing to leave in order to provide food and aid to help others survive
Despite constant shelling and the advance of Russian troops, volunteers of the Ukrainian charity, Age Concern Ukraine, continues to operate through its nine branches across the country
The charity's director, Galina Poliakova, 65, is among those who are staying behind in Kyiv.
"I will stay because there is a lot of work to do. The situation is bad. It’s really difficult to get to people because of the shelling", she says
They are conducting missions to track Russian movement, which might include listening to soldiers’ phone calls, according to one expert.
They also help reveal the position of Russian warships and submarines
The position of the planes helps show the areas NATO countries are interested in, like Crimea and Kaliningrad.
Sky News analysis of flight tracking data from a typical day in recent weeks shows that a host of NATO and Swedish planes are monitoring key Russian positions
Two US flights departed an airbase in Lithuania.
These planes are designed to intercept electronic communications and can be seen flying back and forth along the Russian border of Kaliningrad
Sky’s @AlexCrawfordSky is in the village of Qala-e-Charkh in Afghanistan, where desperation and poverty has pushed more and more families to sell their young girls into early arranged marriages.
The children here are at the forefront of Afghanistan's humanitarian crisis. Their village is at the centre of one of the poorest districts, where up to 95% of people are in need of food or monetary assistance.
Agha Mohammad ‘married’ off his two-year-old baby girl Sitera for $2000 but the family returned her days after because she wouldn’t stop crying as she was still being breast-fed by her mother.