This is CBS I in the World. I'm John Bachelors to Queensland, Australia, to Brisbane,

to Scott Maaman of the CBS News reporting on a controversy that is no longer just about

tennis. It's a contest between two states, two sovereign states, one Australia, which

is hosting a very large and important tennis contest, the Australia Open. And the other

Serbia, the president of Serbia is now weighed in on the fact that the superstar Novak

Chakovik, who has won the Australia Open many times in his world famous, has arrived in

Australia with what he claims was an exemption to being vaccinated before he could participate

in the Open before he could enter Australia. However, that exemption is now suspended or

in question. And the president of Serbia has taken a fenced vusik. He has summoned Australia's

ambassador in Belgrade and demanded they immediately release the tennis star, the prime minister

of Australia, Scott Morrison, has also weighed in on this controversy in these last hours,

reminding everyone Australia has sovereign borders and clear rules that are nondiscriminatory

as so many countries do. It has to do with the fair and reasonable application of Australia's

border protection laws. All I can say is that the evidence medical exemption that was

provided was found to be insufficient. That's enough. Good heavens, Scott. This is looking

like the kind of contests where each side issues ultimatums. What is the opinion of the Australian

public watching this drama? Good day to you. I'll get a John. Yeah, this has gotten out

of hand, hasn't it? Now, Chakovic got his initial clearance to play, but it's on medical

grounds concerning the tournament, not the entry to Australia, but the tournament. So when

that happened, he probably saw the score line at Ferfey Luff in favour of the serve, the

world number one tennis player. So he popped on a plane expecting to come right in. It's

a decision that was not met very heavily within Australia because we have put so much at risk,

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