Button: We must close gap on Red Bull

Jenson Button is hoping Red Bull Racing again prove fallible - otherwise he fears they could prove unstoppable in their charge for Formula One glory.

McLaren driver relinquished the lead of this year's world title race to Red Bull's Mark Webber following his Monaco Grand Prix victory on Sunday, the Australian's second successive triumph in the space of eight days.

Button now trails Webber by eight points in the standings, but said: "This team have the resources, the manpower and the passion to succeed and to chase, and this is what they will do."

He added: "Last year was a difficult season for this team, but they still won two races, and where they came from at the start of the year to where they ended up was extraordinary. So we're hoping we're going to see big improvements over the next few races.

"We've had a couple of issues in the last two races with reliability and mistakes, but we have to put those behind us now and focus on the next race in Turkey.

"We've got to come with a stronger car, and we can't make any mistakes."

McLaren have to show the kind of improvement as displayed by Red Bull in the last two races after problems dogged them in three of the first four grands prix when they should have won them all after starting from pole.

If not, then Button knows not just McLaren will have trouble trying to close the gap.

"They are going to be so hard to catch," added Button.

"It's a big lead they had in Barcelona, especially with a second in qualifying, but no-one is going to give up chasing them, especially not our team. We're going to do everything we can."