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Instead, mitigation was uneven and half-hearted, stoking frustration without effectively preventing spread of the disease, and paving the way for the backlash that followed.

A half-hearted fan protest before and during last weekend's 2-0 loss by Arsenal at the King Power Stadium underlined the struggle to mount a consistent revolt.

Entwistle added: "He likes to push up and apply pressure into the midfield. He's strong in his duels, he's never half-hearted. He's an extremely athletic player."

Less successful were half-hearted efforts to introduce the ban in outlying fishing towns notorious for heavy drinking and loose morals.

Larraín makes a half-hearted attempt to recast Callas as a feminist martyr, alleging, as obliquely as possible, that she was once forced to trade her body to soldiers for cash and food.