Hillary Clinton and Bernie Sanders have clashed over Wall Street and foreign policy, in the Democratic presidential candidates' first one-on-one debate.<br />Mrs Clinton cast him as an idealist who will not get things done and Mr Sanders accused her of being too tied to the establishment to achieve real change.<br />The TV debate in New Hampshire was their first since the Democratic race was whittled down to two this week.<br />Without a third person on stage, the policy differences were laid bare.<br />The former secretary of state said Bernie Sanders' proposals such as universal healthcare were too costly and unachievable<br />TAGS-<br />US election: Hillary Clinton and Bernie Sanders clash in first one-on-one debate<br />US election: Hillary Clinton, Bernie Sanders face off in Democratic debate ahead of New Hampshire primary<br />Hillary Clinton accuses Bernie Sanders of 'artful smear' in fiery Democratic debate<br />More news for US election: Hillary Clinton and Bernie Sanders clash in first one-on-one debate<br />US election: Hillary Clinton and Bernie Sanders clash in first ...<br />US election: Hillary Clinton, Bernie Sanders face off in ... - ABC<br />US election: Hillary Clinton, Bernie Sanders face off in ... - ABC<br />Hillary Clinton and Bernie Sanders clash in New Hampshire<br />Clinton and Sanders Faceoff on Iran and ISIS in First One ...<br />Clinton, Sanders take new combative tone into first one-on ...<br />LIVE: Bernie Sanders and Hillary Clinton debate one-on ...<br />Clinton, Sanders Set for First One-on-One Debate - VOA<br />Sanders and Clinton clash in debate on foreign policy and ...