A country 'cannot enforce its law on the territory of another state' without consent, UN rapporteur tells Al Jazeera.

Denmark and Mexico, also threatened by US President Donald Trump, warn that the US violated international law.

Condemnation comes as Nicolas Maduro appeared in a court in New York and pleaded not guilty to drug charges.

A country 'cannot enforce its law on the territory of another state' without consent, UN rapporteur tells Al Jazeera.