Australia's plan to ban cigarette logos

http://www.bbc.co.uk/worldservice/learningenglish/language/wordsinthenews/2011/04/110408_witn_australia_cigarettes_page1.shtml

Australia has unveiled what it claims are the toughest anti-smoking measures in the world.
unveiled: revealed; especially by having a veil removed.
toughest: strong, determined, aggressive.
They would completely ban logos and branding on packets of cigarettes. Packets would also be plain olive green; the colour that smokers apparently find least attractive. 
ban To prohibit, especially by official decree.
branding. A trademark or distinctive name identifying a product or a manufacturer.
plain. Free from obstructions; open; clear: in plain view.
The colour olive green is the latest weapon in the ongoing battle between the Australian government and big tobacco.
ongoing. Currently taking place.
Under aggressive new proposals, billed as the toughest in the world, every packet of cigarettes sold in Australia would be packaged in that colour after research showed that olive green was the most off-putting for smokers.
proposals: suggestions or plans
billed: An itemized list or statement of fees or charges
off-putting: repellent, or something which makes you want to avoid it