What are the similarities and differences in rulings between someone security-barred and someone prevented from performing Hajj?

Whoever is prevented from reaching the House and circumambulating it due to an enemy, illness, loss of sustenance, or imprisonment, is considered muhsar (hindered). The evidence for this is the Almighty's saying: (فَإِنْ أُحْصِرْتُمْ فَمَا اسْتَيْسَرَ مِنَ الْهَدْيِ) "And if you are prevented, then [offer] what can be obtained with ease of sacrificial animals," and the Prophet's (PBUH) saying: "Whoever is broken or lame, he is absolved, and upon him is another Hajj." The preponderant view is that the generality of the wording applies, not the specificity of the cause. So, whoever assumes ihram for Hajj and is prevented from completing it is muhsar; he must exit from ihram and slaughter a sacrificial animal. If he is unable, he should fast ten days. He is not obliged to make up the Hajj if it was a voluntary one, but if it was obligatory, it remains a debt upon him.