Don't confuse who's (the short form of ‘who is' or ‘who has') with whose (the possessive form of ‘who', meaning ‘of whom' or ‘of which'):
✗ Who's view of the facts are we getting through television?
✓ Whose view of the facts are we getting through television?
✗ …an international organization who's role is to keep peace and stability.
✓ …an international organization whose role is to keep peace and stability.
The short form who's (‘who is' or ‘who has') is used mainly in spoken English and informal writing:
‘Who's going to do that?' ‘You, of course.'
Who's been using my computer?