A deadly shooting at a naval base in Washington DC on Monday has reignited the national debate about gun control.

But it is unclear whether the attack, which resulted in 12 deaths and eight injuries and was allegedly carried out by Aaron Alexis, a military contractor, will revive action in Congress that failed against opposition from gun rights supporters.

Even after a national outcry when an assailant shot dead 20 young children and six adults in a Connecticut school in December, US President Barack Obama was unable to find support from lawmakers for substantial changes.

Monday's shooting was at least the seventh mass shooting during Obama's presidency.

Al Jazeera's Patty Culhane looks at whether things will be different this time.

Source: Al Jazeera