United States Studies Centre associate professor in American politics and foreign policy David Smith told 3AW Mornings host Shane McInnes the 60-day timeline set for negotiations was optimistic.

<p>United States Studies Centre associate professor in American politics and foreign policy David Smith told 3AW Mornings host Shane McInnes the 60-day timeline set for negotiations was optimistic.</p>

Listen to the best bits of 3AW Mornings & exclusive interviews here - and don't forget to tune in live between 8.30am and midday. [http://www.3aw.com.au/](http://www.3aw.com.au/)

<p>Listen to the best bits of 3AW Mornings &amp; exclusive interviews here - and don't forget to tune in live between 8.30am and midday. [http://www.3aw.com.au/](http://www.3aw.com.au/)</p>