The West can't completely isolate Russian banks because it would be disastrous beyond Russia

• The West has tried for more than two years to cripple Moscow's finances by way of sanctions.
• But the West hasn't blocked all Russian banks' access to SWIFT due to potential global impact.
• Russia's economy is in "deep, deep trouble" due to sanctions and finite reserves, an economist said.

When Russia first invaded Ukraine, the West slapped Moscow with swathes of sanctions in an attempt to cripple its finances and force it to end the war quickly.

However, more than two years later, the war is ongoing and the Kremlin is touting its robust economy.