What Saadi said was this:
The Children of Adam are limbs of each other
Having been created of one essence.
When the calamity of time afflicts one limb
The other limbs cannot remain at rest.
If thou hast no sympathy for the troubles of others
Thou art unworthy to be called by the name of a man.
Saadi wrote this to say that when someone suffers, others feel their suffering. The whole purpose of this poem is to talk about suffering, and the sympathy we all should have for each other, wherever we are, and from whatever origin.
That brings up the question, "Does Mr Obama realise the calamity on Iranians that have tried to celebrate Nowruz for 1400 years?". How dare he talk to the Seyyed/Theocrats about this truely Iranian occasion, when the Seyyeds/Theocrats' sole task is to destroy what is Iranian.
Mr Obama, you should be addressing the Iranians that put Nowruz over and above everything else. You should not be trying to cut a deal with these people who hate Iran and its culture so symbolised by Nowruz.