New Delhi, April 6 -- Tesla CEO Elon Musk, who has emerged as a key aide of US President Donald Trump in recent months, has advocated for a "zero tariff situation" between the United States and EU creating a free trade zone between the countries.

Musk's comments come days after Donald Trump launched a tariff offensive on European Union.

Here are five things you need to know about Elon Musk's free trade comment, what free trade means, and what its benefits are:

Elon Musk on Saturday said he hoped Europe and the United States would agree to join in a free-trade zone. Virtually addressing The League Congress in Italy, hosted by right-wing Deputy Prime Minister Matteo Salvini, Musk said, "I hope it is agreed that both Europe and the United...