Russia has more military firepower than Ukraine – covering the land, air and sea.
It has 900,000 active military personnel across its forces, compared with Ukraine’s 196,600.
It is reflective of a wider military dominance that stems from a Russian defence budget that dwarfs Ukraine’s.
The imbalance is greatest at sea, with Russia having 10 times the number of navy personnel.
The Russian navy operates 74 warships and 51 submarines, compared with Ukraine’s two warships.
On land, the balance is closer. The Russian army is made up of 280,000 soldiers compared with Ukraine’s 125,600.
Ukraine also has 900,000 reserve personnel – those who have received military training in the last five years – compared with Russia’s two million.
While these ratios are both about 2.2 to 1, the Russians are much better placed when it comes to equipment.
They have more than three times the amount of artillery, six times the number of tanks, and almost seven times more armoured vehicles than the Ukrainians.
In the air, it is a similar story: Russia has 10 times the number of attack aircraft and helicopters.
The Ukrainians do have over 400 surface-to-air missile launchers that could target aircraft – although this is still only a tenth of the number possessed by Russia.
Russia also has a strong advantage with long-range weaponry, possessing over 500 land-based ballistic missile launchers.
Some analysts think a Russian attack would rely upon long-range weaponry such as cruise missiles to target key Ukrainian sites from distance.
In recent weeks, NATO countries have been supplying Ukraine with additional “lethal aid”, such as the UK’s provision of 2,000 anti-tank weapons.
Yet while these shipments are designed to make any Russian invasion costlier to them, few experts believe these weapons would change the immediate outcome of a Russian attack.
The Data and Forensics team is a multi-skilled unit dedicated to providing transparent journalism from Sky News. We gather, analyse and visualise data to tell data-driven stories. We combine traditional reporting skills with advanced analysis of satellite images, social media and other open source information. Through multimedia storytelling we aim to better explain the world while also showing how our journalism is done.