The safety of the UK's Trident nuclear weapons is to be discussed in Parliament today, after the SNP secured a debate slot.
The party wants to press UK government on recent claims made by a whistleblower concerning the state of the weapons programme.
Able Seaman William McNeilly, 25, caused a manhunt after he published an 18-page report online containing a series of allegations about nuclear submarines based at Faslane, which he called a "disaster waiting to happen".
Alex Salmond, the party's foreign affairs spokesman, said: "Trident is a key issue for people in Scotland. It is bad enough that Scotland is forced to house these weapons of mass destruction but these alleged breaches of security are deeply worrying - there must be absolutely no complacency."
The SNP will make "a positive case" for keeping the UK in the European Union, one of its new MPs has told Parliament.
In his maiden speech to the Commons, Stephen Gethins, MP for North East Fife, also said that his party would try and get as many people voting as possible.
He said: "We want to look at a positive case, even look at some areas where we could be deepening our relationship with our European partners."
He added that "the Scottish referendum provided many lessons", especially "including as many of our citizens as we possibly can in a debate about the future of our respective nations".
The party said the flower was worn in homage to poet Hugh MacDiarmid who wrote the ode 'The Little White Rose of Scotland'.Read the full story ›
The Queen's Speech is an "early test" of the Conservatives' bona fides on devolving more powers to Holyrood, the SNP's Westminster leader has said.
Angus Robertson said there were "shortcomings" on the draft clauses published earlier this year and he insisted the Scotland Bill - which is due to be published on Thursday - must live up to "both the spirit and the letter" of the cross-party deal that was reached.
He said: "As the First Minister agreed with David Cameron, the Scottish Government will also put forward proposals for a transfer of powers beyond Smith for discussion between the Scottish Secretary and the Deputy First Minister - for which half of Scotland's electorate voted. The people of Scotland have spoken and Westminster has a democratic duty to listen."
Nicola Sturgeon has attacked the "scale and speed" of the Conservatives' planned spending cuts in her first major post-election speech.Read the full story ›
MPs for the Scottish National Party (SNP) will join forces with other opposition parties in an effort to block Tory plans to scrap the Human Rights Act, SNP leader Nicola Sturgeon has said.
The First Minister claimed the Conservatives' agenda "lacks legitimacy in Scotland", where David Cameron's party has just a single MP.
The SNP's priority is ending austerity, and the damage it does to people's lives - the Tory government's priority is ending human rights, and the opportunities for fairness they offer ordinary men and women.
For example, it was the Human Rights Act that enabled people to go to court in this country to challenge the grossly unfair bedroom tax.
To scrap the Human Rights Act would be an appallingly retrograde step.
The Scottish Government's Cabinet Secretary for Social Justice, Communities and Pensioners' Rights, Alex Neil, has already written written to UK Justice Secretary Michael Gove "to reiterate the Scottish Government's opposition to the repeal of the Human Rights Act".
Ms Sturgeon said she also raised the matter directly with the Prime Minister when they met and Holyrood could refuse consent to abolish the Act.
She added: "SNP MPs will work across party lines at Westminster to defeat the Tory government on the Human Rights Act - and the SNP Government will invite the Scottish Parliament to refuse legislative consent to scrap it, given the strong devolved dimension.
"This important issue illustrates how Holyrood working together with SNP MPs and others at Westminster can challenge a Tory agenda that lacks legitimacy in Scotland - and help the cause of progressive politics across the UK."
SNP leader and First Minister of Scotland Nicola Sturgeon has tweeted her support of Jim Murphy after he said he will quit as leader of the Scottish Labour party.
I wish Jim Murphy all the very best for the future. Leadership is not easy and he deserves credit for standing up for what he believes in.
The new delegation of 56 Scottish Nationalist MPs arrived at Westminster today to make "Scotland's voice heard".
SNP leader Nicola Sturgeon said her MPs would be "the principled opposition" to the Conservative government.
ITV News Correspondent Martin Geissler reports:
Nicola Sturgeon presented the SNP's delegation of 56 MPs to Parliament and vowed to hold a face to face meeting with David Cameron soon.Read the full story ›
Scotland's First Minister has insisted David Cameron has "no right" to rule out a second independence referendum.
Nicola Sturgeon said she was "not planning" to hold another such ballot but refused to rule it out - claiming it was up to the people of Scotland to decide.
The SNP leader told ITV's Loose Women: "We had that debate and that vote last year, and Scotland, against my better efforts, opted to stay part of the United Kingdom, to stay part of the Westminster system
She added: "I'm not planning another referendum. Why I stop short of saying I absolutely guarantee it is the same reason I don't think David Cameron has got any right to rule it out.
"Whether there is another referendum or not is really down to what people in Scotland want, there can't be another referendum unless people vote for it.