Jeff Sessions rejects claims he lied to Senate

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President Trump's Attorney General says he'll step aside from involvement in any investigations about Moscow's alleged interference in last year's election. But has he done enough to silence calls for his resignation? We speak to a Republican and to leading constitutional historian Caroline Fredrickson. Also: as Sweden reintroduces conscription we hear from two teenagers who may get the call-up. And scientists say woolly mammoths experienced a genetic meltdown shortly before extinction - what does that mean for species brought back from the brink of extinction? Picture: Jeff Sessions Credit: Reuters.