Yes but no more leader, no more hegemon
Today the US is no more leader but still a somewhat hegemon
Keep punchingedinged
Though it's not only the US, it's an alliance of NATO and many countries around the world.
In Asia: Australia, New Zealand, Japan. Taiwan and South Korea could be added to this alliance. Even Philippines and till recently Thailand, but they seem to be drifting towards China. Even Vietnam is now leaning more towards the West and away from China.
So already there is the North American countries, the US and Canada, Europe (EU) and the Asian countries mentioned.
There are probably others in South America too.
And then there's also other countries such as Saudi Arabia, which not really a true ally are at least paid by the US and have common enemies in the region.
And of course, Israel.
India could also even be added as they are against Pakistan which is supported by China and Russia.
These are mostly wealthy, modern and developed countries with modern and well-equipped military forces.
On the other hand, China and Russia are allied with countries like North Korea, Iran, Syria, Pakistan, Myanmar, Zimbabwe and various mostly poor African countries.
In a World War, China and Russia would literally be surrounded. Taiwan, Japan and South Korea already have bases right near their borders.
And if Russia were to attempt to invade Europe they would still have to travel through all the buffer states in the middle.
