Now the challenges come from his customers.
"The challenges come a lot earlier in the race.
The challenges come despite extensive public and private support for the Silicon Valley companies.
Whatever challenges come before us, I will always believe our nation's best days lie ahead.
Kaino is part of the All Blacks' leadership group but challenges come regardless.
So many global development challenges come back to this root issue.
The challenges come not from within this continent but outside it.
All three companies say their toughest recruiting challenges come from start-ups, who snap up people like Nitay Joffe.
The new challenges come after the failure of a legal campaign against the N.S.A.'s domestic spying operations during the administration of President George W. Bush.
"Our challenges come from the explosion in the volume of communications as well as the relentless increase in new ways of accessing and processing that volume," said Lobban.
Samuel Tombs, UK economist at Capital Economics, added: "The real challenges come next year when the Government's austerity programme begins in earnest".
