It is almost certainly illegal

under international law.

I do not know the finer points being put for the kidnapping and detention of the President of Venezuela but it is almost certainly illegal under international law.  

I have no time for Maduro or his regime but this was almost certainly a step too far. My knowledge of international law is limited but I cannot think of anywhere in any convention or any other document where it says "You can kidnap the leader of another country if you think they are a drug dealer or law breaker even if that leader is there by force rather than popular vote." The United Nations charter certainly does not permit breaches of another country's sovereignty - but they happen. Look at Russia, Ukraine, Pakistan, India, China, Sudan, DRCongo and more.

Drugs are more likely to come from somewhere like Colombia than Venezuela. They are more likely to come by much more circuitous routes. They may route through Venezuela, almost certainly do, but they are likely to come from other sources. That they are a problem is obvious. That Maduro is a dictator who has no legitimate claim to power is also obvious.

But is this really what the raid was about? If this is the case why not Putin in Russia or Kim in North Korea? They are both effectively dictators with no legitimate claim to their positions. Closer to America what about Díaz-Canel in Cuba? 

Taking out Maduro and taking over the running of the country is about something else - oil. Venezuela has the world's largest known oil reserves. Sanctions on trading oil were being broken. Control the flow of oil and you have potentially have even greater power than you already have. There are also vast mineral resources. This is surely why President Trump is saying they will "run the country for the present". 

Venezuela's oil industry is not in good shape right now. It needs a lot of work. The companies with oil interests, like Chevron, may not be that interested in trying to repair it right now but they will be given incentives to do so if this coup works.  Yes, it is a coup of sorts.

President Trump has territorial ambitions. He has stated Canada and Greenland will become part the United States of America in the future - not that they may like to but that they eventually will. For him there should be no border between the USA and Canada and Greenland is needed for "strategic" reasons. Really? Will Mexico be next? Will the Panama Canal be next?  If the Panama Canal why not the Suez - for "strategic" reasons perhaps?

Should we be celebrating the downfall of a dictator or concerned by the way in which this has happened? Yesterday someone asked if we were headed for a wider war.  I hope not.