Radio National Breakfast

After fifteen years on air, the final episode of 'The Late Show' hosted by Stephen Colbert is set to air today.

The Trump administration is expected to cut the number of troops available to NATO for fighting wars and responding to major crises - known as the NATO force model.

The announcement is expected to be made at a meeting of NATO defence policy chiefs in Brussels later today - according to the news agency Reuters.

It comes after the Pentagon abruptly cancelled the deployment of 4,000 soldiers to Poland earlier this week - reportedly blindsiding officials in Warsaw.

The Trump administration also ordered the withdrawal of 5,000 troops from Germany earlier this month.

So what does it mean for the NATO alliance - and will the US eventually abandon it altogether?

• GUEST: Douglas Lute, former US ambassador to NATO from 2013-2017
• PRODUCER: Pip Cook

As Ebola infection numbers climb in central Africa, we hear from an infectious diseases physician who's previously worked on the world's biggest ebola outbreak more than a decade ago. 

Then, we turn to a separate health matter in Australia, as the federal government announces millions for diphtheria support package.

And we continue asking what questions people have about the government's tax changes. 

Recap the morning's news, politics and global affairs with the Breakfast Wrap.

A humpback whale has re-written the record books - travelling an extraordinary 15,000 kilometres from the warm waters of Brazil to Queensland's Hervey Bay.

Sam Paior is the founder of support group Growing Space and co-creator of the award-winning Make It Easy app.

The federal government's move to slash the capital gains tax discount hasn't gone down well among investors - both traders in shares and cryptocurrencies.

The federal government has announced a $7 million package to help contain the largest outbreak of diphtheria in recent memory. 

Yesterday at the National Press Club, Shadow Treasurer Tim Wilson vowed the Coalition would repeal the changes the government made to the capital gains tax, negative gearing and trusts. 

The government is continuing the hard sell on its budget initiatives, as the backlash from small business and investors grows.

The US has indicted former Cuban president Raúl Castro on murder charges in the latest escalation in Washington's pressure campaign against the Caribbean island.

The charges stemmed from a 1996 incident in which Cuban jets shot down planes operated by a group of Cuban exiles.