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Republicans duly fashioned themselves as the Daddy Party, in contrast to the Democrats’ unrealistic and emotional sentimentalism.

Scenarios that involve Sun being expelled by China or Americans going in to arrest him to face charges in Allen’s death are both unrealistic, he said.

It's a tall order – and one that many believe to be highly unrealistic.

Experts said it is unrealistic to expect Californians to do that kind of legwork as they search for care for themselves or family members.

Trump believes the taxes will encourage US firms to buy from American suppliers and use American labour, but businesses argue this is unrealistic because they would need to overhaul their supply chains.