sceptical

But he is sceptical that tariffs alone will drive a wholesale return.

Some are sceptical that apples cultivated in hot areas will ever be a commercial proposition.

At a hearing in March, the court appeared sceptical of Mexico's challenge, with justices on both sides of the ideological spectrum questioning the validity of the suit.

President Lee, who historically has been sceptical of Korea's alliance with the US, wants to use his presidency to improve relations with China, South Korea's powerful neighbour and trading partner.

Read - who is an energy economist - is sceptical about the staying power of energy-intensive Bitcoin because he believes other more efficient alternatives are going to emerge.